5. What is the degree of the polynomial x-2x'y? + 7xy"? a. 7 b. 6 c. 5 d.4 6. In the expression (7x + y)', the base is b. y a.-(7x + y) d. -7x + y c. 7x + y 7. The value of -(-5) ? b. 15 a. 15 d. 125 C. -125 8. Simplify (4x'yº? a. 8x'y b. 4x'y c. 16xy d. 20x y 9. When x = -2, which expression has the value 64? b. (3x)? c. 2x d. (2x) a. 3x 10. If x= -1, then x - x + 2 is b. 2 d4 c. 3 a. O 11. Which of the following is a polynomial in standard form? c. 4x + 7x-x d. 3x - 7+ 5x b. 2x + 3x-5 a. x-x-2x 12. Find the sum of 2x2 - 3x + 7 and x? - 5 c. 3x - 3x + 2 d. 3x + 3x-2 a. 3x + 3x - 12 b. 3x²-3x
