Evaluate
\sqrt{6}+5\sqrt{11}\approx 19.032613695
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-2\sqrt{6}+5\sqrt{11}+3\sqrt{6}
Combine 2\sqrt{6} and -4\sqrt{6} to get -2\sqrt{6}.
\sqrt{6}+5\sqrt{11}
Combine -2\sqrt{6} and 3\sqrt{6} to get \sqrt{6}.
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