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x = 2 + √3
1/x = 1 ÷ (2 + √3)
By rationalization,
1/x = (2 - √3) ÷ (2² - √3²)
1/x = (2 - √3)÷(4-3) = 2 - √3
××××××××××××××××××××××
x² + 1/x²
(2 + √3)² + (2 - √3)²
4 + 3 + 4√3 + 4 + 3 - 4√3
7 + 7
14
I hope this will help you
(-:
1/x = 1 ÷ (2 + √3)
By rationalization,
1/x = (2 - √3) ÷ (2² - √3²)
1/x = (2 - √3)÷(4-3) = 2 - √3
××××××××××××××××××××××
x² + 1/x²
(2 + √3)² + (2 - √3)²
4 + 3 + 4√3 + 4 + 3 - 4√3
7 + 7
14
I hope this will help you
(-:
sowmiyayahoocom:
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I have a small doubt in the last q which I posted
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someone had already posted a answer
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this is the answer for that question
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