tolong bantu no 3 pake cara

[tex] \frac{ {a}^{7} {b}^{2} \times {a}^{2} {b}^{7} }{( {ab}^{2})^{3} } = \frac{ {a}^{7 + 2} {b}^{2 + 7} }{ {a}^{3} {b}^{6} } = \frac{ {a}^{9} {b}^{9} }{ {a}^{3} {b}^{6} } = {a}^{9 - 3} {b}^{9 - 6} = {a}^{6} {b}^{3} [/tex]