Question

If X square + 1 by x square is equal to 3 find the value of x + 1 by X

Answer 1

Answer:

Given

$x^{2} + \frac{1}{x^{2} } = 3$

$x^{2} + \frac{1}{x^{2} } + 2 = ( x + \frac{1}{x})^{2}$

$x^{2} + \frac{1}{x^{2} } + 2 = 5\\\\x + 1/x = \sqrt[]{5}$