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1. $x + \frac{1}{x}$

A. 0
B. 0
C. 0
D. 0

Answer: Option A

Explanation:

দেওয়া আছে,

x + \frac{1}{x} = 2 (x + \frac{1}{x})^{2} = (x + \frac{1}{x})^{2} + 4 x \frac{1}{x} = (2)^{2} - 4 = 4 - 4 = 0

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