Math, asked by mailparveshgoyalgma, 1 year ago

This one also please

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Answered by 123sachin

3

(x-1/x)^2= 4^2
x^2+(1/x)^2 - 2*x*1/x= 16
x^2+ 1/x^2-2=16
x^2+1/x^2= 18

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