Question

if x^2-5x+1=0,find value of x^2-1/x^2
step by step answer needed​

Answer 1

Step-by-step explanation:

x^2-5x+1

( divide the equation by x)

x - 5 + (1/x)

x - (1/x) = 5

( squaring both side )

( x -. (1/x))^2 = ( 5) ^2

x^2 - 2 + 1/x^2 = 25

x^2 - 1/x^2 = 25 + 2 = 27