Evaluate
-\frac{3\sqrt{3}}{2}+0.75\approx -1.848076211
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0.25+0.5\left(1-\sqrt{3}\right)-\sqrt{3}
Calculate 0.5 to the power of 2 and get 0.25.
0.25+0.5-0.5\sqrt{3}-\sqrt{3}
Use the distributive property to multiply 0.5 by 1-\sqrt{3}.
0.75-0.5\sqrt{3}-\sqrt{3}
Add 0.25 and 0.5 to get 0.75.
0.75-1.5\sqrt{3}
Combine -0.5\sqrt{3} and -\sqrt{3} to get -1.5\sqrt{3}.
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