Question

8. If x +1/x = 3, evaluate (i) x-1/x​

Answer 1

x + 1/x = 3

(x + 1/x) ² = 3²

x² + 1/ x² + 2 =. 9

x² + 1 /x². = 7

(x - 1/x)². = x² + 1/x² - 2x×1/x

(x - 1/x)² =. 7 - 2

(x - 1/x)². = 5

x - 1/x. = √5

hope it helps you...

Answer 2

The question is
If x +1/x = 2,evaluate (i) x-1/x

Answer:-
Given that x+(1/x)=2
(x^2+1)/x=2
x^2+1=2x
x^2-2x+1=0
(x-1)^2=0
(x-1)=0
x=1
x-(1/x)=1-(1/1)
=1-1
=0