Evaluate
12-1440\sqrt{231}\approx -21874.105181142
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12-\sqrt{479001600}
The factorial of 12 is 479001600.
12-1440\sqrt{231}
Factor 479001600=1440^{2}\times 231. Rewrite the square root of the product \sqrt{1440^{2}\times 231} as the product of square roots \sqrt{1440^{2}}\sqrt{231}. Take the square root of 1440^{2}.
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