1.

\[{{\left( \frac{a}{b} \right)}^{x+y+z}}\div \left[ {{\left( \sqrt{\frac{a}{b}} \right)}^{-x}}\times {{\left( \sqrt{\frac{a}{b}} \right)}^{-y}}\times {{\left( \sqrt{\frac{a}{b}} \right)}^{-z}} \right]=\]______

A.  \[{{\left[ {{a}^{3}}/{{b}^{3}} \right]}^{x+y+z}}\]              
B.  \[{{\left[ {{a}^{2}}/{{b}^{2}} \right]}^{x+y+z}}\]
C.  \[{{\left[ a/b \right]}^{\left( x+y+z \right)/2}}\]              
D.  \[{{\left[ a/b \right]}^{3\left( x+y+z \right)/2}}\]
Answer» E.


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