Find f(8) iff(x) = x² + 2x - 1

asked Mar 13, 2023 156k views

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Substitute 8 for x in the equation to ontain the value of f(8).

$\begin{gathered} f(8)=(8)^2+2\cdot8-1 \\ =64+16-1 \\ =79 \end{gathered}$

So answer is f(8)=79.

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