SAT Math Multiple Choice Question 302: Answer and Explanation

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Test Information

Question: 302

2. Which of the following is equivalent to the expression above, given that x ≠ -5 ?

  • A. 2x
  • B.
  • C.
  • D. 2x + 4

Correct Answer: A

Explanation:

A

Difficulty: Easy

Category: Passport to Advanced Math / Exponents

Strategic Advice: To divide one rational expression by another, multiply the first expression by the reciprocal (the flip) of the second expression.

Getting to the Answer: Rewrite the division as multiplication, factor any factorable expressions, and then simplify if possible.

Note that the question also states that x ≠ -5. This doesn't affect your answer-it is simply stated because the denominators of rational expressions cannot equal 0.

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