1.(x+1/4)-(2x-1/2)结果是( )2.化简.(1).-3[(2x^2)-xy]+4[(x^2)+xy-6](2).-2(m-1)-[(m^2)+3m-4]+2[m-(m^2)-3]3.先化简,(1)1/4[(-4x^2)+2x-8]-(-1/2x-1),其中x=1/2(2)3[(x^2)y+xy]-2[(x^2)y-xy]-(5x^2)y,其中x=1/2,y=-4(3)求:5ab^2-{2a
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 06:55:31
![1.(x+1/4)-(2x-1/2)结果是( )2.化简.(1).-3[(2x^2)-xy]+4[(x^2)+xy-6](2).-2(m-1)-[(m^2)+3m-4]+2[m-(m^2)-3]3.先化简,(1)1/4[(-4x^2)+2x-8]-(-1/2x-1),其中x=1/2(2)3[(x^2)y+xy]-2[(x^2)y-xy]-(5x^2)y,其中x=1/2,y=-4(3)求:5ab^2-{2a](/uploads/image/z/12514879-55-9.jpg?t=1.%28x%2B1%2F4%29-%282x-1%2F2%29%E7%BB%93%E6%9E%9C%E6%98%AF%EF%BC%88+%EF%BC%892.%E5%8C%96%E7%AE%80.%EF%BC%881%EF%BC%89.-3%5B%282x%5E2%29-xy%5D%2B4%5B%28x%5E2%29%2Bxy-6%5D%282%29.-2%28m-1%29-%5B%28m%5E2%29%2B3m-4%5D%2B2%5Bm-%28m%5E2%29-3%5D3.%E5%85%88%E5%8C%96%E7%AE%80%2C%EF%BC%881%EF%BC%891%2F4%5B%EF%BC%88-4x%5E2%EF%BC%89%2B2x-8%5D-%28-1%2F2x-1%29%2C%E5%85%B6%E4%B8%ADx%3D1%2F2%282%293%5B%28x%5E2%29y%2Bxy%5D-2%5B%28x%5E2%29y-xy%5D-%285x%5E2%29y%2C%E5%85%B6%E4%B8%ADx%3D1%2F2%2Cy%3D-4%283%29%E6%B1%82%EF%BC%9A5ab%5E2-%7B2a)
xTRP~zpXbNLrOio)pT)ELֿ:T$W$H:;۳߷{s3rR0,"Y{tjg^16hWV!XF%T5#pLg*&
9E9Wrf Ǡd$[.5aMAT,gY%&r۾bjB (-
Bʷ KUPDbaktckawc&HS1>~4AoqKsT;vf@FAPlmF *;^H'fk_uy7צ|bԾ.
>n_][e474(G50"zRL(Ex7xX@'c63`jP@(9CV nM{Wp)DD{adq&ܣAJR' _A۶P>Y$ea!`ҹT