7m(4m^2 ×p)^2/7m^2 [x(x^2 y^2-xy)-y(x^2-x^3y)]/3x^2y (2x+y+z

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/17 13:38:12

7m(4m^2 ×p)^2/7m^2 [x(x^2 y^2-xy)-y(x^2-x^3y)]/3x^2y (2x+y+z)(2x-y-z)(2x-y-3)^2 (x+y+1)(x+y-1)

1、7m(4m^2·p)^2=7m*4^2*(m^2)^2*p^2 =7m*4^2*m^4*p^2 =7*16m*m^4*p^2 =112m^5*p^2所以7m(4m^2·p)^2÷7m^2=112m^5*p^2÷7m^2=16m^3p^2
2、[x(x^2y^2-xy)-y(x^2-x^3y)]/(3x^2y)={x[xy(xy-1)]-y[x²(1-xy)]}/(3x²y)=[x²y(xy-1)-yx²(1-xy)]/(3x²y)=[x²y(xy-1)+yx²(xy-1)]/(3x²y)=[x²y(xy-1)+x²y(xy-1)]/(3x²y)=[2x²y(xy-1)]/(3x²y)=[2(xy-1)]/3
3、(2x+y+z)(2x-y-z)=(2x+y+z)[2x-(y+z)]=(2x)^2-(y+z)^2=4x^2-(y^2+2yz+z^2)=4x^2-y^2-2yz-z^2
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7m(4m^2 ×p)^2/7m^2 [x(x^2 y^2-xy)-y(x^2-x^3y)]/3x^2y (2x+y+z 计算：(y-x)^3(x-y)^m-(x-y)^m+2(y-x) 计算：（x-y）m（y-x）2m+（y-x）3m． x.y.z.m都是有理数,并且x+y+2z=m,x+2y+3z=m,那么y与z（）计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2) x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8 1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y) 关于x、y的方程组3x+2y＝m+14x+y＝m 3m(x-y)-2（y-x）²因式分解已知X、Y满足2X-7Y=3M,X+2Y=4m+5,且X+Y=0,求M的值已知x,y满足2x-7y=3m,x+2y=4m+5,且x+y=o,求m的值化简(y-x)(z-x)/(x-2y+z)(x+y-2z)+（z-y)(x-y)/(xy-2z)(y+z-2x)+(x-