Question

(1-\sqrt{x})/1+\sqrt{x}

Answer 1

`(1 - 2 √(x) + x )/(1 - x)`

Explanation:

`(1 - √(x) )/(1 + √(x) )`

Rationalize the denominator by multiplying by it conjugate.

`(1 - √(x) )/(1 + √(x) ) * (1 - √(x) )/(1 - √(x) ) = (1 - 2 √(x) + x)/(1 - x)`