#### Answer

$(g-7h)^{2}$=$g^{2}$-14gh+$49h^{2}$

#### Work Step by Step

To simplify the product $(g-7h)^{2}$ we'll apply the rule that states that
$(a-b)^{2}$=$a^{2}$-2ab+$b^{2}$ and set a=g and b=7h
Therefore,
$(g-7h)^{2}$ =$g^{2}$-2(g)(7h)+$(7h)^{2}$
=$g^{2}$-14gh+$49h^{2}$