猪爱
幼苗
共回答了17个问题采纳率:94.1% 举报
(2-√2)(3+√2)=6-3√2+2√2-2=4-√2;
√12-√(1/3)-√(4/3)=2√3-(1/3)√3-(2/3)√3=2√3-√3=√3;
[√(3/8)-3√3]X√12=[(1/4)√6-3√3]X2√3=(1/2)√18-18=(3/2)√2-18;
(√18-√27)/(√6+8√(1/2)=(3√2-3√3)/(√6+4√2)=(3√2-3√3)(4√2-√6)/(4√2+√6)(4√2-√6)
=(24-12√6-6√3+9√2)/(32-6)=(24-12√6-6√3+9√2)/26
1年前
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