Question

ifx-1/x=8 then evaluate x^2+1/x^2

Answer 1

☆Hello friend☆

x - 1/ x = 8

If we do whole square of both sides,

${(x - \frac{1}{x} )}^{2} = {8}^{2}$
x^2 -(2× x× 1/x ) + (1/x)^2 = 64
x^2 -2 + 1/x^2=64
x^2 + 1/x^2 = 64+2
x^2 + 1/x^2 = 66

Hope it helps

☺☺☺

Answer 2

Here is your answer..