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OpenStudy (anonymous):
Rationalize the denominator. Assume that all expressions under radicals represent positive numbers. √3/√7+9
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OpenStudy (kropot72):
Multipying numerator and denominator by sqrt.7 - 9 gives:\[\frac{\sqrt{3}(\sqrt{7}-9)}{(\sqrt{7}+9)(\sqrt{7}-9)}=\frac{\sqrt{21}-9\sqrt{3}}{-74}\]
OpenStudy (anonymous):
awesome thanks
OpenStudy (kropot72):
You're welcome :)
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