Evaluate the function at the given value of the variable.
\[
f(x)=3 x^{2}+2 x-1
\]
a. $f(5)$
b. $f(-6)$
a. $f(5)=$
b. $f(-6)=$

Answer

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Answer

Final Answer: $a. f(5)=\boxed{84}$ $b. f(-6)=\boxed{95}$

Steps

Step 1 ：Given the function $f(x)=3 x^{2}+2 x-1$, we are asked to evaluate the function at $x=5$ and $x=-6$.

Step 2 ：Substitute $x=5$ into the function: $f(5)=3(5)^{2}+2(5)-1$.

Step 3 ：Simplify to get $f(5)=75+10-1=84$.

Step 4 ：Substitute $x=-6$ into the function: $f(-6)=3(-6)^{2}+2(-6)-1$.

Step 5 ：Simplify to get $f(-6)=108-12-1=95$.

Step 6 ：Final Answer: $a. f(5)=\boxed{84}$ $b. f(-6)=\boxed{95}$