Evaluate
-\sqrt{3}\approx -1.732050808
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2\sqrt{3}-3\sqrt{3}
Factor 12=2^{2}\times 3. Rewrite the square root of the product \sqrt{2^{2}\times 3} as the product of square roots \sqrt{2^{2}}\sqrt{3}. Take the square root of 2^{2}.
-\sqrt{3}
Combine 2\sqrt{3} and -3\sqrt{3} to get -\sqrt{3}.
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