1. Review Objective The student will be able to:
Factor polynomials by choosing the appropriate method.
SOL: A.2c
Designed by Skip Tyler, Varina High School

2. 1. Factor. 5ax2 - 45a GCF = 5a 5a(x2 - 9) 5a(x - 3)(x + 3)
2. Factor. 32x3 - 50x
GCF = 2x
2x(16x2 - 25)
2x(4x - 5)(4x + 5)

3. 3. Factor. x4 + x3 - 12x2 GCF = x2 x2 (x2 + x - 12) x2 (x + 4)(x - 3)
4. Factor. 12a3 - 16a2 - 16a
GCF = 4a
4a(3a2 - 4a - 4)
4a(a - 2)(3a + 2)

4. 5. Factor. -45a4 - 135a2d - 40d2 GCF = -5 -5(9a4 + 27a2d + 8d2)
-5(3a2 + 8d)(3a2 + d)

5. 6. The area of a rectangle is represented by 10a2 - 29a - 21
6. The area of a rectangle is represented by 10a2 - 29a What are its dimensions?
Area = Length • Width You need to factor to determine each.
GCF = none
(5a + 3)(2a - 7)
What is the perimeter of the rectangle?
14a - 8