If x square + 1 by x square is equals to 79 find the value of x + 1 by x
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(X+1/x)^2 = x^2 + 1/x^2 +2
= 79+2 =81
So x+1/x = +9 or -9
= 79+2 =81
So x+1/x = +9 or -9
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