Evaluate
2\sqrt{7}\approx 5.291502622
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\sqrt{28}
Multiply 4 and 7 to get 28.
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}.
Examples
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Matrix
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Simultaneous equation
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Limits
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