Answer
$32$
Work Step by Step
Substituting $x$ with $5$, the given expression, $
-3-x^2+12x
,$ evaluates to
\begin{array}{l}\require{cancel}
-3-(5)^2+12(5)
\\\\=
-3-25+60
\\\\=
-28+60
\\\\=
32
.\end{array}
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