Question

25y2 - 16

OA (5y - 4)(5y - 4)
B. (5y - 4)(5y + 4)
OC. (5y + 4)(5y + 4)
OD. (5y + 16) (5y - 16)

Answer 1

B

Explanation:

25y² - 16 ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b)

Given

25y² - 16

= (5y)² - 4²

= (5y - 4)(5y + 4) → B