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1/2{根号2+根号3}-3/4{根号2+根号27}等于多少.
人气:373 ℃ 时间:2020-05-10 20:09:17
解答
1/2{根号2+根号3}-3/4{根号2+根号27}
=1/2√2+1/2√3-3/4×√2-3/4×3√3
= -1/4√2-7/4√3
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