Evaluate
2580-2\sqrt{7}\approx 2574.708497378
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516\times 5-\sqrt{28}
Divide 1548 by 3 to get 516.
2580-\sqrt{28}
Multiply 516 and 5 to get 2580.
2580-2\sqrt{7}
Factor 28=2^{2}\times 7. Rewrite the square root of the product \sqrt{2^{2}\times 7} as the product of square roots \sqrt{2^{2}}\sqrt{7}. Take the square root of 2^{2}.
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