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OpenStudy (anonymous):
Simplify square root 72 minus 3 times square root 12 plus square root of 192 ???
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OpenStudy (tkhunny):
\(\sqrt{72} = \sqrt{2\cdot 36} = \sqrt{2}\cdot\sqrt{36} = \sqrt{2}\cdot(6) = 6\sqrt{2}\) You do 12 and 192 and magical things should pop out.
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