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Advanced Math / Equivalent expressions Difficulty: Easy

Which expression is equivalent to $15 w squared plus 8 w$ ?

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Explanation

Choice A is correct. Since each term of the given expression has a common factor of $w$ , it may be rewritten as $w left parenthesis 15 w plus 8 right parenthesis$ . Therefore, the expression $w left parenthesis 15 w plus 8 right parenthesis$ is equivalent to $15 w squared plus 8 w$ .

Choice B is incorrect. This expression is equivalent to $120 w squared plus 8 w$ , not $15 w squared plus 8 w$ .

Choice C is incorrect. This expression is equivalent to $120 w cubed plus 15 w squared$ , not $15 w squared plus 8 w$ .

Choice D is incorrect. This expression is equivalent to $23 w squared plus 23 w$ , not $15 w squared plus 8 w$ .