Evaluate
\sqrt{2}+2\sqrt{5}\approx 5.886349517
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\sqrt{2}+\sqrt{3}-\left(-2\sqrt{5}\right)-\sqrt{3}
To find the opposite of -2\sqrt{5}+\sqrt{3}, find the opposite of each term.
\sqrt{2}+\sqrt{3}+2\sqrt{5}-\sqrt{3}
The opposite of -2\sqrt{5} is 2\sqrt{5}.
\sqrt{2}+2\sqrt{5}
Combine \sqrt{3} and -\sqrt{3} to get 0.
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