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Find the value of 3x²+2x+5, if x = -7.OA. 138B. -156C. 33D. 432E. 154

Find the value of 3x²+2x+5, if x = -7.OA. 138B. -156C. 33D. 432E. 154-example-1
User Arnie
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1 Answer

3 votes

Given:


3x^2+2x+5

To Determine: The value of the expression when x = - 7

Solution

Substitute x = -7 into the expression


\begin{gathered} 3x^2+2x+5 \\ =3(-7)^2+2(-7)+5 \\ =3(49)-14+5 \\ =147-9 \\ =138 \end{gathered}

Hence, the value of the expression is 138, OPTION A

User Diego Vieira
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