Evaluate
3\sqrt{3}\approx 5.196152423
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3+3\sqrt{3}-\left(\sqrt{3}\right)^{2}
Use the distributive property to multiply \sqrt{3} by 3-\sqrt{3}.
3+3\sqrt{3}-3
The square of \sqrt{3} is 3.
3\sqrt{3}
Subtract 3 from 3 to get 0.
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