Question which-

2.4 Equivalent Expressions - Simplifying polynomials
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Which expression is equivalent to 8yzy7z?

A.

56 y 2 z 2

B.

56 y 2 z

C.

56 y z

D.

16 y z

Which expression is equivalent to 8 y z y 7 z ?

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. The given expression can be rewritten as 8·7y·yz·z, which is equivalent to 56y2z2, or 56 y 2 z 2 .

Choice B is incorrect. This expression is equivalent to 8yzy7.

Choice C is incorrect. This expression is equivalent to 8zy7.

Choice D is incorrect and may result from conceptual or calculation errors.