1. Lesson 87 Warm Up
Pg. 570

2. Factoring Polynomials by Grouping
Algebra 1 Lesson 87
Factoring Polynomials by Grouping

3. Factoring Polynomials by Grouping
Polynomials can be factored by grouping. When a polynomial has four terms, make two groups and factor out the greatest common factor from each group.

4. Example 1
Factor 2x2 + 4xy + 7x + 14y

5. Example 2
Factor 3y2 – 8y3 – 8y + 3. Check your answer.

6. Example 3
Factor 45a3b – 15a3 + 15a2b – 5a2. Check your answer.

7. Example 4
Factor 3a2b – 18a + 30 – 5ab completely. Check your answer.

8. Example 5
x2 – 7x – 44
6k2 – 17k + 10

9. Lesson 87 Homework
Pg. 573 Practice, WS #87