Question

1. 3x^2 – 24x + 21
Select one:
A. (x – 2)(x – 4)
B. 3(x + 2)(x – 4)
C. (x + 7)(x + 1)
D. 3(x – 7)(x – 1)

2.
x^2 – 16
Select one:
A. (x + 4)(x – 4)
B. (x + 4)(x + 4)
C. (x – 2)(x – 8)
D. (x + 2)(x – 8)

3.
x^2 – 25y^2
Select one:
A. (x + y)(x – 25y)
B. (x – y)(x – 25y)
C. (x – 5)(x – 5)
D. (x + 5y)(x – 5y)

Answer 1

1. D (not sure)
2. A
3. D

Answer 2

Ah ok thanks :)