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Warmup

Warmup. 1.) 16x 2 – 81 2.) 3x 2 - 147 3.) 9x 7 + 15x 3 -18 x 5 4.) 2x 2 + 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

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Warmup

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

  2. Factoring by Grouping Section 10.8

  3. 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

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

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

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

  7. Class work • Pg 629 # 21-28 • Quiz 10.8 tomorrow

  8. Homework • Pg 629# 29-35 • Pg 632 # 13-19

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