Evaluate
140
Factor
2^{2}\times 5\times 7
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2\sqrt{7}\sqrt{35}\sqrt{20}
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}.
2\sqrt{7}\sqrt{35}\times 2\sqrt{5}
Factor 20=2^{2}\times 5. Rewrite the square root of the product \sqrt{2^{2}\times 5} as the product of square roots \sqrt{2^{2}}\sqrt{5}. Take the square root of 2^{2}.
4\sqrt{7}\sqrt{35}\sqrt{5}
Multiply 2 and 2 to get 4.
4\sqrt{7}\sqrt{7}\sqrt{5}\sqrt{5}
Factor 35=7\times 5. Rewrite the square root of the product \sqrt{7\times 5} as the product of square roots \sqrt{7}\sqrt{5}.
4\times 7\sqrt{5}\sqrt{5}
Multiply \sqrt{7} and \sqrt{7} to get 7.
4\times 7\times 5
Multiply \sqrt{5} and \sqrt{5} to get 5.
28\times 5
Multiply 4 and 7 to get 28.
140
Multiply 28 and 5 to get 140.
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