Evaluate $f(-1)$ when $f(x)=(x+7)(x-5)$
When $f(x)=(x+7)(x-5), f(-1)=$

Answer

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Answer

Final Answer: $\boxed{-36}$

Steps

Step 1 ：Given the function $f(x)=(x+7)(x-5)$, we are asked to evaluate $f(-1)$.

Step 2 ：To find the value of $f(-1)$, we substitute $x$ with $-1$ in the function.

Step 3 ：So, $f(-1)=(-1+7)*(-1-5)$

Step 4 ：Solving this, we get $f(-1) = -36$

Step 5 ：Final Answer: $\boxed{-36}$