Digital PSAT Math Practice Question 33: Answer and Explanation

Question: 33

Factor: 16a2 - 9b2

  • A. (2a + b)(a - b)
  • B. (3a + 2b)(6a - 3b)
  • C. (4a + 3b)(4a - 3b)
  • D. (8a + 3b)(2a - 3b)

Correct Answer: C

Explanation:

(C) Both the first term and the second term of the expression are squared terms. So the expression can be restated as the difference of squares, the general form of which is x2 - y2 = (x + y)(x - y):

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