The Quadratic Formula (Edexcel GCSE Maths): Flashcards

Find solutions to any quadratic equation

$ax^2 + bx + c = 0$

$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

Coefficient of $x^2$

Coefficient of $x$

Constant term

Discriminant

How many real solutions the equation has

$2a$ (not just $a$)

Two solutions: calculate with $+$ and $-$

Won't factorise easily

No real solutions