9. What is the complete factored form of 2-1 6? A. (7-4)2 B. (7-8) C. (7-4) (2-4) D. (2+4) (2-4)3 10. What is the complete factored form of the expression JA-49? A. (92)2-(72)2 B. (22-7)2 C. (12+7) D. (22-7) (12+7) 11. Which of the following polynomials has factors (xy- 1)(xy + 1)? A. xy-1 B. 2232-1 C. xy2-1 D. XP22+1 12. Which of the following expressions is a perfect cube? A. 8x B. 27.72 C. 6476 D. 12574 13. Which of the following is the complete factored form of the cubic polynomial x3-8? A. (r-2)(x2+2x+4) B. (x+2)(x2–2x+4) C. (r-2)(x2+2r-4) D. (x-2)(x2-2x+4) 14. Factor completely: 27x3+ 6493 A. (3x)3+ (4y) 3 B. (3x+4y)(9x2-12xy+16y2) C. (3x+4y)(3.x2-3xy+1672) D. (3x+4y)(3x2-12xy+432) 15. Your classmate was asked to square (2x-3), he answered 4x2-9. Is his answer A. Yes, because product rule is correctly applied. B. Yes, because squaring a binomial always produces a binomial product. C. No, because the answer must be 4x2+9. D. No, because squaring a binomial always produces a trinomial product. 16. What is the result when you square a binomial? A binomial B. difference of two squares C. sum of two squares D. perfec​