Warmup 1.) 16x2 – 81 2.) 3x2 - 147 3.) 9x7 + 15x3 -18 x5 4.) 2x2 + 5x - 12.

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Warmup 1.) 16x2 – 81 2.) 3x2 - 147 3.) 9x7 + 15x3 -18 x5 4.) 2x2 + 5x - 12

Factoring by Grouping Section 10.8

Grouping When there are 4 terms, you factor by grouping Steps 1.) Group the first 2 terms and the last 2 terms 2.) Find the GCF of both sets of parenthesis 3.) Rewrite the factors in new parenthesis

Factor Tree GCF 2 4 3 Difference of Grouping Perfect Squares Trinomials

Examples 1.) 3x + 3 + x2 + x 2.) x3 + 4x2 + 6x + 24

Examples (cont.) 3.) x2 + 2x + 3x + 6 4.) x3 - 2x2 – 9x + 18

Class work Wkst 10.8 A # 1-6, 13-24

Homework Pg 629 # 29-34