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# Factor by grouping

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### Transcript

• 1. Algebra I 1/30/14 Pick up a drill paper
• 2. Algebra I 1/30/14 Factor 1. 12x2+16x 2. x2+12x+27 3. x2 -x-42
• 3. Obj: STW factor by grouping
• 4. Factor 4ab + 8b +3a + 6
• 5. Factor 4ab + 8b +3a + 6 (4ab + 8b) +(3a + 6) Step 1 group the 1st two terms and last two terms
• 6. Factor 4ab + 8b +3a + 6 (4ab + 8b) +(3a + 6) Step 2 Factor out GCF of each term
• 7. Factor 4ab + 8b +3a + 6 (4ab + 8b) +(3a + 6)  4b(a+2) +3(a+2) Step 2 Factor out GCF of each term
• 8. Factor 4ab + 8b +3a + 6 (4ab + 8b) +(3a + 6)  4b(a+2) +3(a+2) Step 3 make sure you end up with the same thing in the parentheses
• 9. Factor 4ab + 8b +3a + 6 (4ab + 8b) +(3a + 6)  4b(a+2) +3(a+2) (4b+3) (a+2) Step 4 rewrite with GCF's
• 10. Factor 35x - 5xy + 3y -21
• 11. Factor
• 12. Factor