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The option to input an equation is at the top-right corner of the calculator window. As you can see from the picture above, you can compute both linear and quadratic equations in the calculator.

Save guides, add subjects and pick up where you left off with your BBC account. An equation is a statement with an equals sign, stating that two expressions are equal in value, for example ...

If you struggled with the quiz, don't panic - we've got you! You can revise solving linear equations by clicking the links below.

In particular, they show that any quantum computation can be encoded into an instance of solving linear equations, even with the restrictions required for their quantum solver to be efficient.