x2+1 =83 find the value of x-1
x2 x
x2+1/x2=83
x2+1/x2-2=83-2 Subtracting by 2 both the sides
(x-1/x)2=81 Since, x2+1/x2-2=(x-1/x)2
x-1/x=811/2
x-1/x=9 ANS
x2+1/x2-2=83-2 Subtracting by 2 both the sides
(x-1/x)2=81 Since, x2+1/x2-2=(x-1/x)2
x-1/x=811/2
x-1/x=9 ANS