If x-1/x= -1, find the value of x^2+1/x^2
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Answer: x-1/x= -1
= (x-1/x)^2 = (-1)^2
= x^2+1/x^2-2*x*1/x = 1
= x^2+1/x^2 - 2 = 1
= x^2+1/x^2 = 1+2
= x^2+1/x^2 = 3
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