Evaluate
28563120-2\sqrt{14}\approx 28563112.516685225
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28563120-\sqrt{56}
Add 28562248 and 872 to get 28563120.
28563120-2\sqrt{14}
Factor 56=2^{2}\times 14. Rewrite the square root of the product \sqrt{2^{2}\times 14} as the product of square roots \sqrt{2^{2}}\sqrt{14}. Take the square root of 2^{2}.
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