Choose the letter of the correct answer (Part 2)

6. All of the following are factors of 12x² Except one. What is it?
A. 12
B. 12x
C. 12x²
D. 12x³

7. What is the GCF of the expression 4x⁴ + 6x?
A. 2
B. x
C. 2x
D. 2x⁴

8. If one factor of 4x² + 6 is 2, what is the other factor?
A. 2x + 3
B. 4x + 6
C. 2x + 6
D. 2x² + 3

9. If one factor of 6ab² - 12 a² b ³ is 1 - 2ab, what is the other factor?
A. 6ab
B. 6a² b
C. 6ab²
D. 6a² b ²

10. Which of the following is a perfect square?
A. 12x ⁴
B. 16x ²y ²
C. 25x⁵ y 6
D. 36x⁶ y ⁷​