Question

X is equal to 3 root 8 , then find the value of x square + 1 by x square

Answer 1

Answer.

X = 3√8

To find x^2 + 1 / x^2 -------(1)

First let us find the value of x^2

X^2 = (3√8)^2

= 72

Putting the value in equation (1)

We get ,

x^2 + 1/ x^2 = (72) +1 /72

= 73/72.