If x - 1/x = 4 then what is x² + 1/x²?
यदि x - 1/x = 4 हो तो x² + 1/x² का मान क्या होगा?
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Correct Answer
C. 18 / 18
Explanation(x - 1/x)² = x² - 2 + 1/x² so 16 + 2 = 18.
(x - 1/x)² = x² - 2 + 1/x² इसलिए 16 + 2 = 18।