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Chapter 9 Math

Solving Quadratic Equations

quadratic function a nonlinear function that can be written in the standard form y = ax^2 + bx +c, where a =/= 0
completing the square a method for solving quadratic equations; in this method, a constant c is added to the expression x^2 + bx so that x^2 + bx + c is a perfect square trinomial
quadratic formula the formula that can be used to find the real solutions of the quadratic equation ax^2 + bx + c, where a =/= 0 and b^2 - 4ac >= 0
discriminant the expression b^2 - 4ac of the associated equation ax^2 + bx + c = 0; the expression uder the radical sign b^2 - 4ac in the quadratic formula
roots the solutions of a polynomial equation
square root if b^2 = a, then b is a square root of a
zero (of a function) an x-value for which f(x) = 0
Created by: maddymoo11