Which of the following expressions is equivalent to ?
-
A
-
B
-
C
-
D
Correct answer: D
Explanation
Choice D is correct. Expanding the given expression using the distributive property yields . Combining like terms yields
, or
, which is equivalent to
.
Choices A and B are incorrect and may result from incorrectly combining like terms. Choice C is incorrect and may result from distributing only to a, and not to 3, in the given expression.
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