Evaluate
-3\sqrt{2}\approx -4.242640687
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-\sqrt{2}-2\sqrt{2}
Factor 8=2^{2}\times 2. Rewrite the square root of the product \sqrt{2^{2}\times 2} as the product of square roots \sqrt{2^{2}}\sqrt{2}. Take the square root of 2^{2}.
-3\sqrt{2}
Combine -\sqrt{2} and -2\sqrt{2} to get -3\sqrt{2}.
Examples
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Limits
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