যদি  \(\frac{{\rm{x}}}{{\rm{y}}}\,{\rm{ = }}\,\frac{{{\rm{a}}\,{\rm{ + }}\,{\rm{2}}}}{{{\rm{a}}\,{\rm{ - }}\,{\rm{2}}}}\) হয়, তাহলে \(\frac{{{x^2}\, - \,{y^2}}}{{{x^2}\, + \,{y^2}}}\) এর মান নির্ণয় করুন।

1
\(\frac{{{{\rm{a}}^{\rm{2}}}\,{\rm{ + }}\,{\rm{4}}}}{{{\rm{4a}}}}\)
2
\(\frac{{{{\rm{a}}^{\rm{2}}}\,{\rm{ - }}\,\,{\rm{4}}}}{{\rm{a}}}\)
3
\(\frac{{{\rm{4a}}}}{{{{\rm{a}}^{\rm{2}}}\,{\rm{ + }}\,{\rm{4}}}}\)
4
\(\frac{{\rm{a}}}{{{{\rm{a}}^{\rm{2}}}\,{\rm{ - }}\,{\rm{4}}}}\)

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