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5. Which of the following is the factor of 16ײ + 40x + 25?

A. (4x + 5)(4x + 5)

B. (4x + 25)(x + 1)

C.(16× + 5) (16× + 5) (× + 5)

D. (16× + 1) (× + 25)

6. Factor: ×⁴ - 12x²y + 36y²

A. (x - 6y) (x + 6y)

B. (x - 6y) (x - 6y)

C. (x² - 6y) (x2 - 6y)

D. (x² - 6y) (x2 + 67)

7.Factor:׳-27.

A.(× - 3)³

B.(× - 3) (ײ-9)

C.(× - 3) (ײ - 3× + 9)

D.(× - 3) (ײ + 3× + 9)​