6. The product of (m + 1)(m-1) is a. m2+1 c. m2 + 2m + 1 b. m2.1 d. m2- 2m + 1 7. Find the GCF of 20, 40, 60, 80 a. 10 b. 15 c. 20 d. 40 8.It is a process of finding the factors. a. Squaring a trinomial c. special product b. Squaring a binomial d. factoring 9. Which of the following is a set of perfect square? a. 16, 9, 27 c. 25, 16,8 b. 81, 25, 36 d. 36, 24, 25 10. What is the value of a non-zero polynomial raised to zero? a. Constant b. zero c. undefined d. cannot be determined 11. Reduce 8x?y to its lowest term 10xy? a. 4xy b. 5xy C. 4xy d.xy? 12. Reduce 3x - 15 to lowest term. 4x - 20 a. 4/5 b. 5/4 c. 3/4 d.4/3 13. Find the value of 3x for x = 2. x + 2 b.3/2 c. 3/2 d. 1 14. If x = 5, what is the value of x-2 X-6 a. -2 b. - 3 c. 3 d. 4