The Quadratic Formula Solve the following by completing the square …
The Quadratic Formula If … … then … Yes! You MUST memorize and be able to use this formula.
The Quadratic Formula If … … then … b 2 – 4ac is called the discriminant: less than zero two complex solutions i.e. they involve i equal to zero one real solution greater than zero two real solutions
Methods for Solving Quadratic Equations Graphing Graph: f(x) = ax 2 + bx + c Solutions are the x-intercepts Factoring (mx + n)(rx + s) = 0 x = –n/m & –s/r Completing the Square Quadratic Formula NOTE: Assume the equation is in standard form: ax 2 + bx + c = 0