If \frac{x}{y} = \frac{a + 2}{a−2}, then {x^{2}−y^{2}}/{x^{2} + y^{2}} =?

Tripura TET Math Science 2019 Solved Paper

Question : 96 of 150

Marks: +1, -0

\;{x}/{y} = \;{a\;+\;2}/{a−2}

, then

\;{x^{2}−y^{2}}/{x^{2} + y^{2}} =

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