Evaluate
2\sqrt{59}-3969\approx -3953.637708504
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2\sqrt{59}-63^{2}
Factor 236=2^{2}\times 59. Rewrite the square root of the product \sqrt{2^{2}\times 59} as the product of square roots \sqrt{2^{2}}\sqrt{59}. Take the square root of 2^{2}.
2\sqrt{59}-3969
Calculate 63 to the power of 2 and get 3969.
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