√3−1/x = x হলে x3+x+1/x+1/x3 = ?
Solution
Correct Answer: Option B
√3−1/x = x
=> x+ 1/x = √3
এখন,
x3+x+1/x+1/x3 = (x+ 1/x)^3 - 3.x. 1/x (x+ 1/x) + x + 1/x
= (√3)^3 - 3√3 + √3
= 3√3 - 3√3 + √3
= √3
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