Evaluate
6\sqrt{231}\approx 91.192104921
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\sqrt{22\times 21\left(22-13\right)\left(22-20\right)}
Subtract 1 from 22 to get 21.
\sqrt{462\left(22-13\right)\left(22-20\right)}
Multiply 22 and 21 to get 462.
\sqrt{462\times 9\left(22-20\right)}
Subtract 13 from 22 to get 9.
\sqrt{4158\left(22-20\right)}
Multiply 462 and 9 to get 4158.
\sqrt{4158\times 2}
Subtract 20 from 22 to get 2.
\sqrt{8316}
Multiply 4158 and 2 to get 8316.
6\sqrt{231}
Factor 8316=6^{2}\times 231. Rewrite the square root of the product \sqrt{6^{2}\times 231} as the product of square roots \sqrt{6^{2}}\sqrt{231}. Take the square root of 6^{2}.
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