यदि \(\rm \left(y^2+\frac{1}{y^2}\right)=167\) और y > 0 है,\(\rm \left(y+\frac{1}{y}\right)\) का मान ज्ञात कीजिए।

1
13
2
\(-\sqrt{165}\)
3
\(\sqrt{165}\)
4
-13

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