**Q13: **

Completely factor .

- A
- B
- C
- D

**Q14: **

Completely factor .

- A
- B
- C
- D

**Q15: **

Completely factor .

- A
- B
- C
- D

**Q16: **

Completely factor .

- A
- B
- C
- D
- E

**Q17: **

Which of the following is equivalent to ?

- A
- B
- C
- D
- E

**Q18: **

Completely factor .

- A
- B
- C
- D
- E