|1-根号3|+2的负2倍-2sin60°

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|1-根号3|+2的负2倍-2sin60°
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|1-根号3|+2的负2倍-2sin60°
|1-根号3|+2的负2倍-2sin60°

|1-根号3|+2的负2倍-2sin60°
别听他的,是负的四分之三.

等于-3

=根号3-1+1/2的平方-2*根号3/2
=根号3-1+1/4-根号3
=-1+1/4
=-3/4 就这个啦.............