Answer
$y^{3}+6y^{2}+12y+8$
Work Step by Step
$(y+2)^{3}=(y+2)(y+2)(y+2)=y^{3}+3y^{2}(2)+3y(2^{2})+2^{3}=y^{3}+6y^{2}+12y+8$
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