5. Which of the following is a square of the binomials?
A. (x - 2)= x2 + 2x + 4
C. (x - 1)2 = x2 - 2x - 1
B. (x + 4)2 = x2 - 4x + 16
D. (x + 2)2 = x2 + 4x + 4
6. Which of the following shows the cube of binomials?
A. (x + 5)3 = x3 + 15x2 – 75x + 125 C. (x - 2) = x2 - 6x2 + 12x - 8
B. (x + 5)3 = x3 + 15x2 + 75x + 125 D. all of these
7. What is the simplest form of (2x - 3)2 ?
A. x2 + 9 B. 4x2 +9
C. 4x2 - 12x + 9
D. 4x2 - 6x +9
8. What is (3x2 + 4)(3x2 -- 4) equal to?
A. 9x2 - 16 B. 9x2 + 16
C. X* + 16
D. 9x - 16
9. What should be the value of k so that 9x2 - kx + 4 is a perfect square trinomial?
A. 12
B. 10
C. 6
D. -12
10. Which of the following expressions is equal to (x - 1)?
A. x3 -x2+x-
C.x+x+x+
B. x) - 34x2+x-
D. x! +3x2+x-
11. What is (x +2y)(x - y) equal to?
A. x2 - xy + 2y? B. x² + xy - 2y2 C. x2 - 2xy + 2y2 D. x2 + 2xy + 2y2
12. Which of the following has (x - 5) as one of its factors?
A. x3 - 125 B.X2-25
C. x2 - 2x - 15 D. all of these​