Evaluate
2-2\sqrt{2}\approx -0.828427125
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-\sqrt{8}+2
Multiply 2 and 4 to get 8.
-2\sqrt{2}+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}.
Examples
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Matrix
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Limits
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