Question
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Answer (Detailed Solution Below)
Detailed Solution
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गणना:
प्रश्न के अनुसार,
⇒x = 9 - 4√5
⇒x² = 161 - 72√5
और
⇒y = 9 + 4√5
⇒y² = 161 + 72√5
अब,
= (161 - 72√5 - 1 + 161 + 72√5)/(161 - 72√5 + 1 + 161 + 72√5)
= (322 - 1)/(322 + 1)
= 321/323
इसलिए, अपेक्षित मान 321/323 है।
Last updated on Jun 13, 2025
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