Question which-
Which of the following is equivalent to 
?
5x
5x2
Which of the following is equivalent to ?
Medium-difficulty · SAT Math · Equivalent Expressions — Simplifying polynomials. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice A is correct. Since 
is a common term in the original expression, like terms can be added: 
. Distributing the constant term 5 yields .
Choice B is incorrect and may result from not distributing the negative signs in the expressions within the parentheses. Choice C is incorrect and may result from not distributing the negative signs in the expressions within the parentheses and from incorrectly eliminating the 
-term. Choice D is incorrect and may result from incorrectly eliminating the x-term.
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