If x- 1/x = 8,Find x2 + 1/x2 – InterviewSolution

1.

If x- 1/x = 8,Find x2 + 1/x2

Answer»

★ANSWER♣

62

Step-by-step EXPLANATION:

❒ LET x be a

❒ let 1/x be b

★ According to the question:-

↦a+b=8

❒ Square on both the sides:-

↦(a+b)²=8²

↦a²+b²+2ab=64

↦a²+b²+2•x•1/x=64

↦a²+b²+2=64

↦a²+b²=62

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