Quadratic Equations

Quadratic equations have the form ax² + bx + c = 0.

Methods

1. Factorising
2. Quadratic formula: x = (-b ± √(b² - 4ac)) / 2a
3. Completing the square

Example

Solve: x² - 5x + 6 = 0

Factorising: (x - 2)(x - 3) = 0
So x = 2 or x = 3