Question

If x-1/x=5,find the value of x^2+1/x^2 and x^4+1/x^4?

Answer 1

x-1=5x
x=-1/4
Putting value in question respectively than ans will be 17 and 257

Answer 2

x-1/x=5
x^2+1/x^2=23
x^4+1/x^4=527