Evaluate
3-\sqrt{2}\approx 1.585786438
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\frac{6-2\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}.
3-\sqrt{2}
Divide each term of 6-2\sqrt{2} by 2 to get 3-\sqrt{2}.
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