X-1/x = -1 , find the value of x^2+1/x^2
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x -1/x = -1
squaring both sides,
(x-1/x)² = (-1)²
⇒x²+1/x² -2 = 1
⇒x²+1/x² = 1+2 = 3
squaring both sides,
(x-1/x)² = (-1)²
⇒x²+1/x² -2 = 1
⇒x²+1/x² = 1+2 = 3
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