question no 18 fast reply
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x - 1/x = √3
(x - 1/x)² = x² + 1/x² - 2
3 = x² + 1/x² - 2
3 + 2 = x² + 1/x²
x² + 1/x² = 5
REGARDS
PRIYANSH SHUKLA
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hope this helps you out
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