mavii

Some quadratics cannot be factorised ... continue on with a calculator, adding and subtracting the square root to find the two solutions. \(x = -3 \pm \sqrt{19}\) The first solution is: \(x ...

Rearrange this quadratic ... Square root both sides: \(x – 2 = \pm\sqrt{7}\) Add 2 to both sides: \(x = 2 \pm\sqrt{7}\) This gives the two exact solutions in surd form. If required, use a ...