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Which expression is equivalent to (3x + 8)^2 – (x – 7)?A. 9x ^2 + 47x + 57B. 9x ^2 + 47x + 71C. 9x ^2 - x + 57D. 9x^2 - x + 71

User Peter Carter
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1 Answer

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19 votes

SOLUTION

The given expression is


(3x+8)^2-(x-7)

This is simplified as


\begin{gathered} 9x^2+48x+64-x+7 \\ =9x^2+48x-x+64+7 \\ =9x^2+47x+71 \end{gathered}

Therefore the given expression is equivalent to


undefined

User AlvinH
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