1. The expression 3xy" is a greatest common factor of
A. 9xy and 6x’y
B. 18x2y3 and 12x’y
C. 9x?y and 6xy2
D. 18x'y and 12xy?
2. What are the factors of x2_49?
A. (x+7)(x+7)
B. (x-7)(x+7)
C. x (x-7)
D. (x-7)(x-7)
3. If one of the factors of 4x2 -- 25 is 2x - 5, what is the other factor?
A. 2x + 5
B. 2x-5
C. -2x + 5
D. -2x - 5
4. Factor completely: x - y.
A. (x+y)(x2+xy+y)
B. (x-7)(x2+xy+y2)
C. (x+y)(x2-xy+y?)
D. (x-7)(x²-xy+y)
5. One of the factors of x3 + 27 is x + 3. What is the other factor?
A. X+ 3x + 9
B. x2-3x + 9
C. x2 + 3x -9
D. x2-3x - 9
6. The expression x2+10x+25 is the same as
A. (x+5)(x+5)
B. (x-5)(x+5)
C. x (x+5)
D. (x-5)(x-5)
7. The factors of 25x2_30x + 9 are
A. (5x + 3)(5x + 3)
B. (5x - 3)(5x+3)
C. 5x (5x - 3)
D. (5x - 3)(5x - 3)
8. Factor: m2 - 10m + 24.
A. (m + 6)(m+4)
B. (m - 6)(m + 4)
C. (m + 6)(m - 4)
D. (m-6)(m - 4)
9. Factor: m² - 5m - 24.
A. (m-8)(m+3)
B.(m – 12)(m + 2)
C. (m - 6 )(m +4)
D. (m+6)(m - 4)
10. What are the factors of x2 + 7x + 10?
A. (x + 5)(x+2)
B. (X - 5)(x+2)
C. (x + 5)(x - 2)
D. (X - 5)(x - 2)
11. One of the factors of 2x2 -X-6 is x - 2. What is the other factor?
A. 2x + 3
B. 2x-3
C. 3x + 2
D. 3x - 2
12. What is the length of a rectangle whose area is 28m- and whose width is 7m?
A. 2m
B. 4m
C.6m
D.8m
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