Question

if x square +1/x square =18 find the valie of x+1/x and x-1/x​

Answer 1

Step-by-step explanation:

x2+1/x2=18

subtract 2.x.1/x on both sides

x2+1/x2-2.x.1/x=18-2.x.1/x

(x-1/x)2=18-2

x-1/x=16