What are the factors of x² + 4x- 21?
A. (x +7)( x + 3)
B. (x - 7)(x + 3)
C. (x + 7)(x - 3)
D. (x - 7)(x -3)

If one factors of 2x² + 5x - 3 is x + 3,what is the other factor?
A. x + 2
B. x - 2
C. 2x + 1
D. 2x - 1

What is the complete factored form of 8a² + 8ab +2b²?
A. 2 (a - b)²
B. 2 (2a -b)²
C. 2 (x - 4)(x - 1)
D. 2 (x + 4)(x -1)

What is the complete factored form of 2x² - 6x - 8?
A. 2(x -4)(x + 1)
B. 2(x + 4)(x + 1)
C. 2(x - 4)(x - 1)
D. 2(x + 4)(x -1)

Need po ng answerr pleeaaseee​