SAT Math Multiple Choice Question 317: Answer and Explanation

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Test Information

Question: 317

2. Which of the following expressions is equivalent to ?

  • A.
  • B.
  • C.
  • D.

Correct Answer: C



Difficulty: Easy

Category: Passport to Advanced Math / Quadratics

Strategic Advice: Use the structure of the expression to factor it. Notice that both terms are perfect squares.

Getting to the Answer: The expression is a difference of two squares, so write each term as a quantity squared and then use the rule a2 - b2 = (a + b)(a - b).

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