\[\frac{{{\mathbf{4}}^{\mathbf{-}}}^{\mathbf{3}}\mathbf{\times }{{\mathbf{a}}^{\mathbf{-}}}^{\mathbf{5}}\mathbf{\times }{{\mathbf{b}}^{\mathbf{4}}}}{{{\mathbf{4}}^{\mathbf{-}}}^{5}\mathbf{\times }{{\mathbf{a}}^{\mathbf{-}}}^{8}\mathbf{\times }{{\mathbf{b}}^{3}}}=\]

\[8\frac{{{a}^{2}}}{{{b}^{-7}}}\]

\[\frac{16{{a}^{3}}}{{{b}^{7}}}\]

\[2\frac{{{a}^{-13}}}{{{b}^{-7}}}\]

\[\frac{{{a}^{8}}}{{{b}^{-1}}}\]

\[\frac{{{\mathbf{4}}^{\mathbf{-}}}^{\mathbf{3}}\mathbf{\times }{{\mat

1.	\[\frac{{{\mathbf{4}}^{\mathbf{-}}}^{\mathbf{3}}\mathbf{\times }{{\mathbf{a}}^{\mathbf{-}}}^{\mathbf{5}}\mathbf{\times }{{\mathbf{b}}^{\mathbf{4}}}}{{{\mathbf{4}}^{\mathbf{-}}}^{5}\mathbf{\times }{{\mathbf{a}}^{\mathbf{-}}}^{8}\mathbf{\times }{{\mathbf{b}}^{3}}}=\]
A.	\[\frac{16{{a}^{3}}}{{{b}^{7}}}\]
B.	\[8\frac{{{a}^{2}}}{{{b}^{-7}}}\]
C.	\[2\frac{{{a}^{-13}}}{{{b}^{-7}}}\]
D.	\[\frac{{{a}^{8}}}{{{b}^{-1}}}\]
Answer» B. \[8\frac{{{a}^{2}}}{{{b}^{-7}}}\]

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\[\frac{{{\mathbf{4}}^{\mathbf{-}}}^{\mathbf{3}}\mathbf{\times }{{\mathbf{a}}^{\mathbf{-}}}^{\mathbf{5}}\mathbf{\times }{{\mathbf{b}}^{\mathbf{4}}}}{{{\mathbf{4}}^{\mathbf{-}}}^{5}\mathbf{\times }{{\mathbf{a}}^{\mathbf{-}}}^{8}\mathbf{\times }{{\mathbf{b}}^{3}}}=\]

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