If x2 +27, then x- – InterviewSolution

1.

If x2 +27, then x-

Answer»

We know(x- 1/x) ^2 = x^2 + 1/x^2 - 2

Given, x^2 + 1/x^2 = 27

(x- 1/x) ^2 = 27 - 2(x- 1/x) ^2 = 25

Then, value of(x- 1/x) = 5

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