-2x²y(3xy²z-2y平方z)
1个回答
-2x²y(3xy²z-2y平方z)
=-6x³y³z+4x²y³z
相关问题
已知A=2x^3-xy^z,B=y^3-z^2+xy^z,C=-x^3+2y^2-xy^z,其中,x=-1,y=1,z=
x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2 =[x(y+z)-y(x-z)]^2 =(xz+
y+z/x=z+x/y=x+y/z(x,y,z不等于0),求x的平方+y的平方+z的平方/xy+yz+2xz
如果2x=y+z 3x+2y-12z=0且z≠0,求(2z²+3xy+y²)/(y²+z&
为什么(y3/z+z3/x+x3/y)(yz+zx+xy)>=(y2+x2+z2)2
因式分解:24x y^2 z^2 * (x+y-z) - 32xyz * (z-x-y) + 8xy z^3 * (z-
化简(y-x)(z-x)/(x-2y+z)(x+y-2z)+(z-y)(x-y)/(xy-2z)(y+z-2x)+(x-
已知x+y+z=1,x2+y2+z2=2,x3+y3+z3=3,求xy(x+y)+yz(y+z)+zx(z+x)的值
已知2x-3y+z=0,3x-2y-6z=0,求(x平方+y平方+z平方)/(2*x平方+y平方-z平方)值
方程组(xy+x)/(x+y+1)=2 (xz+2x)/(z+y+2)=3 (y+1)(z+2)/(z+y+3)=4