Answer
$(g\circ f)(5)=-31$
Work Step by Step
Since $
(g\circ f)(5)=g(f(5))
$, then,
\begin{array}{l}
(g\circ f)(5)=g(5^2-3(5)+2)
\\\\
(g\circ f)(5)=g(12)
\\\\
(g\circ f)(5)=-3(12)+5
\\\\
(g\circ f)(5)=-31
\end{array}
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