CCLS - Math: A.REI.4.b

Reasoning With Equations And Inequalities
Solve Equations And Inequalities In One Variable
State Standard:
Solve quadratic equations by inspection (e.g., for x2 = 49), taking square roots, completing the square, the quadratic formula and factoring, as appropriate to the initial form of the equation. Recognize when the quadratic formula gives complex solutions and write them as a ± bi for real numbers a and b.