question_answer

The sum of \[\frac{1}{x+y}\]and \[\frac{1}{x-y}\]is

A)  \[\frac{2y}{{{x}^{2}}-{{y}^{2}}}\]                             

B)  \[\frac{2x}{{{x}^{2}}-{{y}^{2}}}\]  

C)  \[\frac{2x}{{{y}^{2}}-{{x}^{2}}}\]             

D)         \[\frac{-2y}{{{x}^{2}}-{{y}^{2}}}\]