Question

if (x-1/x)² = 36, find the value of x²+1/x²​

Answer 1

The answer is in the attachment

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Answer 2

(x-1/x)² = 36

x²+1/x²-2× x × 1/x = 36

x²+1/x² -2 = 36

x² + 1/x² = 36 + 2

x²+1/x² = 38

Above this formula used

( a-b)²=a²-b²-2ab)