Quadratic Formula (Grade 11 NSC Matric Mathematics): Flashcards

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

$b^2 - 4ac$

Two distinct real roots

One repeated real root

No real roots (imaginary)

$ax^2 + bx + c = 0$ where $a \neq 0$

Coefficient of $x^2$

Coefficient of $x$

The constant term

Plus or minus, giving two possible solutions