Evaluate
3-\sqrt{5}\approx 0.763932023
Factor
3-\sqrt{5}
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\left(\sqrt{3-\sqrt{5}}\right)^{2}
Multiply \sqrt{3-\sqrt{5}} and \sqrt{3-\sqrt{5}} to get \left(\sqrt{3-\sqrt{5}}\right)^{2}.
3-\sqrt{5}
Calculate \sqrt{3-\sqrt{5}} to the power of 2 and get 3-\sqrt{5}.
Examples
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