1/2{根号2+根号3}-3/4{根号2+根号27}等于多少.
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![1/2{根号2+根号3}-3/4{根号2+根号27}等于多少.](/uploads/image/z/2527969-49-9.jpg?t=1%2F2%EF%BD%9B%E6%A0%B9%E5%8F%B72%2B%E6%A0%B9%E5%8F%B73%EF%BD%9D-3%2F4%EF%BD%9B%E6%A0%B9%E5%8F%B72%2B%E6%A0%B9%E5%8F%B727%EF%BD%9D%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91.)
1/2{根号2+根号3}-3/4{根号2+根号27}等于多少.
1/2{根号2+根号3}-3/4{根号2+根号27}等于多少.
1/2{根号2+根号3}-3/4{根号2+根号27}等于多少.
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
1/2×(√2+√3)-3/4×(√2+√27)
=1/2×(√2+√3)-3/4×(√2+3√3)
=√2/2+√3/2-3√2/4+9√3/4
=-√2/2-7√3/4