1 . 2x2-x-15

• A. (x+6)(x-5)
• B. (x-5)(x-6)
• C. (x+3)(2x-5)
• D. (2x+5)(x-3)

Answer: Option D

Explanation:

2 . 3x2-x-10

• A. (x+2)(3x-5)
• B. (x+2)(3x-5)
• C. (x-2)(3x-5)
• D. (x-2)(3x+5)

Answer: Option A

Explanation:

3 . 3x2-x-10

• A. $(x + 2) (3x - 5)$
• B. $(x+2) (3x+5)$
• C. $(x - 2) (3x + 5)$
• D. $(x-2) (3x-5)$

Answer: Option C

Explanation:

4 . x2-x-1

• A. It is always odd.
• B. It is always even.
• C. It is always positive.
• D. It is even when x is even and odd when x is odd.

Answer: Option A

Explanation:

5 . f(x)=x3-x2-x-18

• A. 0
• B. 1
• C. 2
• D. 3

Answer: Option A

Explanation:

6 . x2-x-12=0

• A. $3,4$
• B. $3,-4$
• C. $-3,-1$
• D. $-3,4$

Answer: Option D

Explanation: