Answer
$x^2-x-4$
Work Step by Step
We plug in $x-2$ to $f(x)$ to get
$f(x-2)=(x-2)^2+3(x-2)-2\\
f(x-2)=(x^2-4x+4)+(3x-6)-2\\
f(x-2)=x^2-x-4$
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