Answer:
[tex] \frac{1 - 2 \sqrt{x} + x }{1 - x} [/tex]
Step-by-step explanation:
[tex] \frac{1 - \sqrt{x} }{1 + \sqrt{x} } [/tex]
Rationalize the denominator by multiplying by it conjugate.
[tex] \frac{1 - \sqrt{x} }{1 + \sqrt{x} } \times \frac{1 - \sqrt{x} }{1 - \sqrt{x} } = \frac{1 - 2 \sqrt{x} + x}{1 - x} [/tex]
