bentuk sederhana dari [tex]( {a}^{2} b) {}^{3} \: ( {a}^{2} {b}^{4} ) {}^{ - 1} [/tex] adalah....

[tex]( a^{2}b )^{3} ( a^{2}b^{4} )^-1 \\ = ( a^{2x3} b^{3} ) ( a^{2x(-1)} b^{4x(-1)} ) \\ = ( a^{6}b^{3} ) ( a^{-2}b^{-4} ) \\ = a^{6+(-2)}b^{3+(-4) \\ = a^{4}b^{-1} \\ = \frac{a^{4}}{b} [/tex]