Answer
$h^{2}$+4h+4
Work Step by Step
The formula to be used is: $(a+b)^{2}$=$a^{2}$+2ab+$b^{2}$
We substitute the values and simplify:
$(h+2)^{2}$= $h^{2}+(2)(h)(2)+2^{2}$= $h^{2}+4h+4$
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