3.5 The Quadratic Formula Objective: To solve quadratic equations by using the quadratic formula.
Standard Form of a Quadratic Equation ax2 + bx + c = 0
Quadratic Formula I will give you the formula, no need to memorize it. However, certain exams, ISAT, PSAT, SAT, ACT might require you have it memorized. Other teachers in the building might require you to memorize it. Keep that in mind.
Steps to use the Quadratic Formula 1) Get equation into standard form. 2) Identify a, b, and c. 3) Substitute (use parentheses). 4) Simplify (do the math, following the order of operations). Do not mix steps 3 and 4!