Evaluate
\sqrt{5}\approx 2.236067977
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\left(\sqrt{5}\right)^{2}+\sqrt{5}-5
Use the distributive property to multiply \sqrt{5} by \sqrt{5}+1.
5+\sqrt{5}-5
The square of \sqrt{5} is 5.
\sqrt{5}
Subtract 5 from 5 to get 0.
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