x + 1/x = √3 হলে x3 + 1/x3এর মান কত?
Solution
Correct Answer: Option C
x3+1/x3
= ( x + 1/x )3 - 3.x.1/x (x + 1/x)
= (√3)³- 3√3
= √3.√3.√3- 3√3
= 3√3 - 3√3 = 0
= ( x + 1/x )3 - 3.x.1/x (x + 1/x)
= (√3)³- 3√3
= √3.√3.√3- 3√3
= 3√3 - 3√3 = 0
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