MCQ
The Exprssion $(x + y)^{-1}(x^{-1}+ y^{-1})$ is equivalent to:
- A$1$
- ✓$(xy)^{-1}$
- C$x^y$
- D$xy^{-1} + x^{-1}y$
$(x + y)^{-1}(x^{-1} + y^{-1})$
$\Rightarrow\frac{1}{\text{(x+y)}}\times\Big(\frac{1}{\text{x}}+\frac{1}{\text{y}}\Big)$
$\Rightarrow\frac{1}{\text{(x+y)}}\times\Big(\frac{\text{x+y}}{\text{xy}}\Big)$
$\Rightarrow\frac{1}{\text{x+y}}\Rightarrow({\text{xy}})^{-1}$
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