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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:solve-equations-inequalities/x2f8bb11595b61c86:linear-equations-variables-both-sides/v/equations-3 Sal solves the equation 2x + 3 = 5x - 2. Practice this lesson yourself on KhanAcademy.org ...

What is 8÷2(2+2) = ? Everyone is arguing about this problem, so let's figure out the correct answer! The problem involves the order of operations, historical math notation, and binary expression trees. Glad to see the world is passionate about mathematics! (Note: some people write 8/2(2 + 2) = but this has the same answer.) 0:00 Order of ...

Do you like solving interesting exponential equations like 2^x=2x? If so, then continue to learn more math on Brilliant. Use this link https://brilliant.org/blackpenredpen/ to receive 20% off. 0:00 Let's do some math for fun! 0:29 Review Lambert W function 2:28 Solve 2^x=2x 6:13 Why it looks like just one answer 9:27 Check out Brilliant 💪 ...

This algebra video tutorial explains how to solve systems of equations by elimination and how to solve systems of equations by substitution with 2 variables. Algebra Video Lessons: https://www.video-tutor.net/ Matrices - Free Formula Sheet: https://www.video-tutor.net/algebra-formula-sheet.html System of Equations: https://www.video-tutor.net ...

{https://www.youtube.com/watch?v=FVu4Yh6Gtvg} Solving Quadratic Inequalities The basic procedure and one full example is shown! In order to solve the quadratic inequality we first solve the corresponding quadratic equation and then take test points in between each of the roots of the quadratic expression. We then use those test values to ...

👉Learn how to solve a system (of equations) by elimination. A system of equations is a set of equations which are collectively satisfied by one solution of the variables. The elimination method of solving a system of equations involves making the coefficient of one of the variables to be equal in all the equations that make up the system, in ...

http://www.freemathvideos.com In this video series I show you how to solve a system of equations by graphing. When solving a system of equations by graphing we graph each equation separately and then analyze where the two lines intersect or if at all. If the two lines intersect at a point then the values of the x and y coordinates are our ...

This algebra video tutorial explains how to solve systems of equations by graphing. The solution is the point of intersection of the two graphs. Matrices - Free Formula Sheet: https://www.video-tutor.net/precalculus-formula-sheets.html System of Equations: https://www.video-tutor.net/systems-of-equations.html Final Exam and Test Prep Videos ...

What is x times x equal to in algebra? To solve x multiplied by x, try to observe the pattern created by letting x be any number. After creating your list of numbers, it is apparent that x times x is x^2 not 2x.

We've seen lots of equations, which are constructs that equate two things, but there are also inequalities, which state that two things are not equal, but rather that one is greater than or less than the other. We can solve this just like equations, but there are one or two little differences that we have to go over. Check it out! Watch the ...

How to multiply variables in algebra? What is 2x times x? When multiplying variables in algebra which are the same, you can solve it by adding the exponents. So for example, 2x times x, the answer would be 2x^2. Note that x by itself is actually to the power 1. Likewise the coefficients (the numbers before the variables) can be multiplied ...

This algebra video tutorial explains how to solve system of equations with 3 variables and with word problems. It contains two example word problems on investment and on total value. Matrices - Free Formula Sheet: https://www.video-tutor.net/algebra-formula-sheet.html System of Equations: https://www.video-tutor.net/systems-of-equations.html ...

MIT grad shows the easiest way to complete the square to solve a quadratic equation. To skip ahead: 1) for a quadratic that STARTS WITH X^2, skip to time 1:42. 2) For a quadratic that STARTS WITH 2X^2, 3X^2, etc., skip to time 6:46. 3) For NEGATIVE leading term like -X^2, skip to 13:34. 4) If there's NO X TERM (ex. 3x^2 - 121 = 0), then you ...

This calculus video tutorial provides a basic introduction into implicit differentiation. it explains how to find dy/dx and evaluate it at a point. It also explains how to find the slope of a curve given the x and y coordinates. In addition, it explains how to find d^2y/dx^2, the second derivative of the function using implicit differentiation ...

👉 Learn how to solve literal equations. A literal equation is an equation where the unknown values are represented by variables. To solve a literal equation means to make one of the variables the subject of the formula. To do this, we use the simple algebraic process of undoing all the algebraic operations related to the variable we want to ...

👉 Learn how to solve exponential equations. An exponential equation is an equation in which a variable occurs as an exponent. To solve an exponential equation, we isolate the exponential part of the equation. Then we take the log of both sides. Note that the base of the log should correspond to the base of the exponential part of the ...

Solving Exponential Equations – How to Solve for 'x' When It's an Exponent In this video, I show how to solve for x when it appears as an exponent in an exponential equation. We go through a few different cases to cover the most common methods for solving these types of equations. For the first exponential equation, we use the method of like ...

The domain of a function is the set of numbers that can go into a given function. In other words, it is the set of x-values that you can put into any given equation. The set of possible y-values is called the range. If you want to know how...

Completing the Square - Solving Quadratic Equations | Algebra Tips In this video, we'll dive into completing the square to solve a quadratic equation, specifically when the coefficient of x^2 is not 1. We'll go through a slightly harder example, demonstrating a preliminary factoring step followed by completing the square to solve. The process ...

What is the value of this infinite exponent tower? See my follow-up video about a potential paradox 4 = 2: https://www.youtube.com/watch?v=DmP3sFIZ0XE I was asked this problem in a high school math competition, and you had to solve it as fast as possible. Hence I made a short 1 minute video showing this trick. For those wanting a proof suitable ...

This calculus video tutorial provides a basic introduction into implicit differentiation. it explains how to find the first derivative dy/dx using the power rule & product rule. It also explains how to find the second derivative d2y/dx2 using the chain rule. Derivatives - Free Formula Sheet: https://www.video-tutor.net/calculus-formula-sheets ...

How to integrate cos^2 x using the addition formula for cos(2x) and a trigonometric identity.

How to integrate sin^2 x using the addition formula for cos(2x) and a trigonometric identity.

This calculus video tutorial explains how to find the indefinite integral of cos(2x) using u-substitution. Calculus 1 Final Exam Review: https://www.youtube.com/watch?v=WmBzmHru78w Integration - Formula Sheet: https://bit.ly/3XCT6oz Full-Length Exam Videos: https://bit.ly/41WNmI9 Calculus Video Playlists: https://www.video-tutor.net

Welcome to Solving Two-Step Equations with Mr. J! Need help with how to solve two-step equations? You're in the right place! Whether you're just starting out, or need a quick refresher, this is the video for you if you need help with solving 2-step equations with variables (aka: 2-step algebra equations). Mr. J will go through 2-step equations ...

📚 Setting Up Definite Integrals with Riemann Sums: Step-by-Step Guide (Part 1) 🧮 In this video, I show you how to set up a definite integral using the method of Riemann sums. This is the foundational technique for finding areas beneath curves, and though it can be a bit tedious, it’s essential for understanding the concept behind ...

Let's solve the famous exponential equation x^2=2^x. It is easy to see x=2 and x=4 are the first two solutions, but we will have to use the Lambert W function in order to get the 3rd solution. Lecture on Lambert W function: https://youtu.be/Qb7JITsbyKs This is my "equation of the year" in 2019. To see others, please check out here 👉https ...

How to differentiate the natural exponential function using chain rule. d/dx of e^(x^2)

👉 Learn all about sequences. In this playlist, we will explore how to write the rule for a sequence, determine the nth term, determine the first 5 terms or any term of the sequence. We will investigate binomial expansion as well as arithmetic and geometric sequences. 👏SUBSCRIBE to my channel here: https://www.youtube.com/user ...

Quick and easy factoring of polynomials. Use the box method and eliminate the need for guessing and checking.

This video explains how to complete the square for expressions involving coefficients of x squared other than 1, such as 2, 3, 4 etc. Practice Questions: https://corbettmaths.com/2019/08/22/completing-the-square-practice-questions/ Textbook Exercises: https://corbettmaths.com/2019/09/18/completing-the-square-textbook-exercise/

We will solve 2 different exponential equations: x^2*e^x=2 and x+e^x=2 by using the Lambert W function. Lambert W function Intro: https://youtu.be/sWgNCra93D8 Solve x*e^x=1 by using Newton's Method, https://youtu.be/EjUp_5X6io4 ---------------------------------------- 💪 Support this channel and get my math notes by becoming a patron: https ...

Have you ever wondered why the "half power" means square root? Did someone just decide that's how it was going to be? In this video, we'll explain precisely and simply why the "half power" means square root!

Struggling to find the derivative of sin²(x) (or sine squared x)? 😩 Feeling overwhelmed by the chain rule? This video is your lifesaver! 🌊 We break down the process step-by-step using simple language, clear visuals, and practical examples. In under 2 minutes, you'll conquer differentiation and confidently find the derivative of sin²(x ...

Learn how to find the average rate of change of a function between two x values. We discuss what the average rate of change represents on a graph and the formula for calculating rate of change. We also discuss how to find the corresponding y values so that you have two ordered pairs with which to work. Take Your Learning to the Next Level with ...

In this video we'll draw the graph for y = 2x. You may also see this written as f(x) = 2x. First, we will use a table of values to plot points on the graph. Once we have two or three points, we can draw our line for the linear equation. You can choose any values of x for your table, however, 0, 1, and -1 are often best since they result in ...

This is an actual in class video shot from my iphone and ipad the sound is lack luster but okay. The title explains it all. For more math shorts go to www.MathByFives.com For Math Tee-Shirts go to http://www.etsy.com/shop/39Industries?section_id=14291917

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In this video we'll draw the graph for y = 2x + 2. You may also see this written as f(x) = 2x + 2. First, we will use a table of values to plot points on the graph. Once we have two or three points, we can draw our line for the linear equation. You can choose any values of x for your table, however, 0, 1, and -1 are often best since they result ...

Formula of reflection about the line y = 2x In this video, I present a really neat application of change of coordinates: Namely, I calculate the formula of the reflection of a point about the line y = 2x. Can you guess the formula beforehand? You might be surprised! Enjoy Change of coordinates video: https://youtu.be/kt30_acrk6o Rotation matrix ...

In this video we’ll follow a clear set of steps for writing the factors for the equation x^2 -2x + 1 = 0. We’ll first write the skeleton form of the equation and then find the factors for the last term in the equation, and then test to see which set of factors give us the correct equation. There are a number of ways to factor equations like ...

In this video we’ll follow a clear set of steps for writing the factors for the equation x^2 - 2x - 24 = 0. We’ll first write the skeleton form of the equation and then find the factors for the last term in the equation, and then test to see which set of factors give us the correct equation. There are a number of ways to factor equations ...

In this video we’ll follow a clear set of steps for writing the factors for the equation 2x^2 + 3x + 1 = 0. We’ll first write the skeleton form of the equation and then find the factors for the last term in the equation, and then test to see which set of factors give us the correct equation. There are a number of ways to factor equations ...

This function video tutorial explains how to calculate f(2) and what this notation means with relation to a given function. f(2) means that we want to find the value of a function f(x) when x is equal to 2.

2^2x + 2^x - 12 = 0

To understand the difference between x^2 and 2x, let's examine the results of substituting values for x and also consider the graphs of these functions. When we substitute values for x and evaluate x^2 and 2x, we get the following results: For x = 1: x^2 = 1^2 = 1 2x = 2(1) = 2 For x = 2: x^2 = 2^2 = 4 2x = 2(2) = 4 For x = 3: x^2 = 3^2 = 9 2x ...

We simplify and break down the 2 times tables so kids and toddlers can understand more easily, knowing and remembering the tables is the key but knowing the foundations are also critical. We show that using a multiplication table can be a good visual reference if you can’t remember any of the tables. Learning to count by 2 is widely used ...

In this video, we'll draw the graph for y = 2x + 2. You may also see this written as f(x) = 2x + 2. 🔹General Graphing Using Slope Intercept Form: https://youtu.be/ud5RTd13M3Y 🔹General Graphing with a Table of Values: https://youtu.be/z42G-SRvnfo We’ll use the slope-intercept form to draw the graph. Here we use the general format Y = mx ...