3(xy+2z)+(-xy+3z) 怎样做
2个回答
3(xy+2z)+(-xy+3z)
=3xy+6z-xy+3z
=2xy+9z
相关问题
3(xy-2z)+(-xy+3z)化简
3(xy-2z)+(-xy+3z)等于多少?
计算-xy-(4z-2xy)-(3xy-4z)
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=
3[xy-2z] [-xy 3z] 的化简比是什么?
5yz/(y+z)=6,4xy/(z+x)=3,3xy/x+y=2
代数式(xyz2+4xy-1)+(-3xy+z2xy-3)-(2xy2+xy)的值()
-5(x^2y^3z^3)^2/(-xy^2z)^2
(xyz^2+4xy-1)-(2xyz^2+yx)-(3xy+3-z^2xy)值 ①与x,y,z值无关②与x,y,z值有
-2x²y(3xy²z-2y平方z)