Question

can u please solve this question

Answer 1

x^2+1/x^2=66                   x^2+1/x^2+2=68

x^2+1/x^2-2=64                (x+1/x)^2 =68

(x-1/x)^2=64                       x+1/x=+-root 68

x-1/x=+-8                            x+1/x=+-2 root7

NOTE: "+-" means it can be + can be -