Evaluate
1-2\sqrt{3}\approx -2.464101615
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1-2\sqrt{3}\left(1+\sqrt{3}-\sqrt{3}\right)
Combine \sqrt{3} and \sqrt{3} to get 2\sqrt{3}.
1-2\sqrt{3}\times 1
Combine \sqrt{3} and -\sqrt{3} to get 0.
1-2\sqrt{3}
Multiply 2 and 1 to get 2.
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