यदि x = \(\frac{9+\sqrt{80}}{9-\sqrt{80}}\) है, तो व्यंजक (x - 161)2  का मान ज्ञात कीजिए। 

1
 (18√80)2
2
(162√80)2
3
(61√80)2
4
(62√80)2

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