factoring trinomials

By: Breanna A. Peters

directions-factor in to

binomials

• x^2+7x-18

x^2 xx xxx xx

-1 -1 -1 -1 -1 -1 -1 -1 -1-1 -1 -1 -1 -1 -1 -1 -1 -1

algibra tiles

x^2 xx xxx xx

-1 -1 -1 -1 -1 -1 -1 -1 -1-1 -1 -1 -1 -1 -1 -1 -1 -1-x

-x

xx

-x+x =0binomial(x+9)(x-2)

Check

x 9

x x^2 9x

-2 -2x -18

Answer

• x^2+7x-18