Evaluate
4\sqrt{2}-2\approx 3.656854249
Factor
2 {(2 \sqrt{2} - 1)} = 3.656854249
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2\times 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}.
4\sqrt{2}-2
Multiply 2 and 2 to get 4.
Examples
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Limits
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