If x + 1/x = 11, find the value of x² + 1/x²
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Given Equation is x + 1/x = 11
On squaring both sides, we get
= > (x + 1/x)^2 = (11)^2
= > x^2 + 1/x^2 + 2 * x * 1/x = 121
= > x^2 + 1/x^2 + 2 = 121
= > x^2 + 1/x^2 = 121 - 2
= > x^2 + 1/x^2 = 119.
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