Expansion and Simplification of Quadratic Expressions (Chap 3.2)

Expansion and Simplification of Quadratic Expressions

a) Example: -2 (3x -2) 

    *Multiply 3x-2 by 2 before changing its sign. 

    Therefore, -2(3x-2) = (- 2)(3x)+(- 2)(- 2)

                                    = -6x + 4

b) Example: -2x(3x-2) = (-2x)(3x) + (-2x)(-2) 

                                     = -6x² + 4x

(Prezi link):

http://prezi.com/uf3po-ri-vba/expanding-and-simplifying-quadratic-equations/