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Question
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Given $f(x)=-x^{2}+10 x$, find $f(-8)$
Answer Attempt 1 out of 2
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Answer

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Answer

Final Answer: $\boxed{-144}$

Steps

Step 1 ：Substitute -8 into the function: $f(-8) = -(-8)^{2}+10(-8)$

Step 2 ：Simplify the expression: $f(-8) = -64 - 80$

Step 3 ：Evaluate the expression: $f(-8) = -144$

Step 4 ：Final Answer: $\boxed{-144}$