一.(1)3√1/2-√1/8+√9/8(2)15√0.2+4√125+3√1/27-√75(3)(√12-√1/2-2√1/3)-2(√1/8-√18)(4)(6√1/6-1/2√24)+(3/2√2/3-√54)(5)(1/6√24-√0.5+2√2/3)-1/4(√1/8-√3/2) 二.先化简,
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 13:03:37
![一.(1)3√1/2-√1/8+√9/8(2)15√0.2+4√125+3√1/27-√75(3)(√12-√1/2-2√1/3)-2(√1/8-√18)(4)(6√1/6-1/2√24)+(3/2√2/3-√54)(5)(1/6√24-√0.5+2√2/3)-1/4(√1/8-√3/2) 二.先化简,](/uploads/image/z/45242-26-2.jpg?t=%E4%B8%80.%EF%BC%881%EF%BC%893%E2%88%9A1%2F2-%E2%88%9A1%2F8%2B%E2%88%9A9%2F8%EF%BC%882%EF%BC%8915%E2%88%9A0.2%2B4%E2%88%9A125%2B3%E2%88%9A1%2F27-%E2%88%9A75%EF%BC%883%EF%BC%89%EF%BC%88%E2%88%9A12-%E2%88%9A1%2F2-2%E2%88%9A1%2F3%EF%BC%89-2%EF%BC%88%E2%88%9A1%2F8-%E2%88%9A18%EF%BC%89%EF%BC%884%EF%BC%89%EF%BC%886%E2%88%9A1%2F6-1%2F2%E2%88%9A24%EF%BC%89%2B%EF%BC%883%2F2%E2%88%9A2%2F3-%E2%88%9A54%EF%BC%89%EF%BC%885%EF%BC%89%EF%BC%881%2F6%E2%88%9A24-%E2%88%9A0.5%2B2%E2%88%9A2%2F3%EF%BC%89-1%2F4%EF%BC%88%E2%88%9A1%2F8-%E2%88%9A3%2F2%EF%BC%89+%E4%BA%8C.%E5%85%88%E5%8C%96%E7%AE%80%2C)
一.(1)3√1/2-√1/8+√9/8(2)15√0.2+4√125+3√1/27-√75(3)(√12-√1/2-2√1/3)-2(√1/8-√18)(4)(6√1/6-1/2√24)+(3/2√2/3-√54)(5)(1/6√24-√0.5+2√2/3)-1/4(√1/8-√3/2) 二.先化简,
一.(1)3√1/2-√1/8+√9/8(2)15√0.2+4√125+3√1/27-√75
(3)(√12-√1/2-2√1/3)-2(√1/8-√18)(4)(6√1/6-1/2√24)+(3/2√2/3-√54)(5)(1/6√24-√0.5+2√2/3)-1/4(√1/8-√3/2) 二.先化简,再求值:(6x√y/x+3/y√xy^3)-(4x√x/y+√36xy),其中x=3/2,y=27
一.(1)3√1/2-√1/8+√9/8(2)15√0.2+4√125+3√1/27-√75(3)(√12-√1/2-2√1/3)-2(√1/8-√18)(4)(6√1/6-1/2√24)+(3/2√2/3-√54)(5)(1/6√24-√0.5+2√2/3)-1/4(√1/8-√3/2) 二.先化简,
1、=3√2/2-√2/4+3√2/4
=3√2/2+√2/2
=2√2
2、=15√5/5+4*5√5+3*√3/9-5√3
=3√5+20√5+√3/3-5√3
=23√5-14√3/3
3、=(2√3-√2/2-2√3/3)-2(√2/4-3√2)
=(4√3/3-√2/2)-√2/2+6√2
=4√3/3+5√2
4、=(√6-√6)+(3/2*√6/3-3√6)
=0-5√6/2
=-5√6/2
5、=(1/6*2√6-√2/2+2*√6/3)-1/4*(√2/4-√6/2)
=(-√2/2+√6)-1/16*√2+1/8*√6
=-9√2/16+9√6/8
=-9√2/8(1/2-√3)