Question

Which of the following is the correct factorization of this trinomial?

4x^2 - 0x - 9

A. (4x - 3)(x + 3)

B. (2x - 3)(2x + 3)

C. (2x - 9)(2x + 1)

D. (4x - 9)(x + 1)

Answer 1

B. (2x - 3)(2x + 3)

Explanation:

4x² - 0x - 9 = 4x² - 9 = (2x)² - 3² = (2x - 3)(2x + 3)

used: (a - b)(a + b) = a² - b²