Quadratic equations (AQA GCSE Maths): Quizzes

Highest power of $x$ is 2

Zero

Factorise the left-hand side

At least one bracket must equal zero

$x = -9$ and $x = 1$

Difference of two squares

$x = 0$

Substitute back into original equation

$x = \text{[number]}$

$(x + a)(x - a) = 0$