Question

$( \frac{x { }^{2} + y {}^{2} }{x {}^{2} - y {}^{2} } - \frac{x {}^{2} - y {}^{2} }{x {}^{2} + y {}^{2} } ) \div ( \frac{x +y }{x - y} - \frac{x - y}{x + y}) \times ( \frac{x}{y} + \frac{y}{x} )$
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Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

this question's answer is 1