2.x^{9}+ 1

3. 2m^{4}- 2mn^{3}

4. 3a^{4}+ 81a

B. Can These Be Factored using the methods (GCF, squares, cubes) discussed in thislesson? Yes or No? Explain why or why not in a complete sentence?

5. 7x^{5}- 64y

6. a^{4}+ 1

7. a^{4}– 64

C. Factor completelyusingGrouping

8.xy– 5y– 2x+ 10

9. x^{3}+ x^{2}-x – 1

D. Apply Your Knowledge

10. Suppose a football iskicked from the ground and its height, h, in feet above the ground is given byh = -3.9t^{2}+ 15.6t.

The time, t, represents thenumber of seconds after the ball is kicked.At what time does the football hitthe ground?