Hi all(adsbygoogle = window.adsbygoogle || []).push({});

I've been stumped on a basic question.

Show that:

[tex] \frac{{\sqrt x - \sqrt a }}{{x - a}} = \frac{1}{{\sqrt x + \sqrt a }} [/tex]

I've tried removing the radical sign, bringing the denominator up, etc...

Help?

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# Algebra question

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