Question

pls anwser fast it's very urgent ​

Answer 1

Answer:

i.2

iii.0................

Answer 2

Step-by-step explanation:

x+(1/x) =2

Squaring on both sides

(x + (1/x))^2 = 2^2

x^2 + (1/x)^2 + 2 × x × (1/x) = 4

x^2 + 1/x^2 = 4 -2

x^2 + 1/x^2 = 2

2)

(x - 1/x)^2 = x^2 + 1/x^2 - 2 × x × 1/x

(x - 1/x)^2= x^2 + 1/x^2 - 2

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

x - 1/x = 0

3)

x^2 - 1/x^2 = (x+1/x) (x-1/x)

x^2 - 1/x^2 = 2 × 0 = 0