Question

8. If x2 +1/x2=18, then the value of
x-1/x will be​

Answer 1

Answer:

if.

Step-by-step explanation:

x^2 + (1/x^2) = 2 + 16

= > x^2 + (1/x^2) - 2 = 16

We can write it as,

= > x^2 + (1/x^2) - 2 * x * (1/x) = 16

We know that a^2 + b^2 - 2ab = (a - b)^2

= > (x - 1/x)^2 = 16

Hope it helps!