1.

Simplify \[\frac{{{\left( a+\frac{1}{b} \right)}^{x}}\times {{\left( a-\frac{1}{b} \right)}^{y}}}{{{\left( b+\frac{1}{a} \right)}^{x}}{{\left( b-\frac{1}{a} \right)}^{y}}}.\]

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


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