m(x-y)+n(y-x)=(x-y)()m(x-y-z)^2+n(y+z-x)=(x-y-z)()m(x-y-z)-x+y+z=(x-y-z)()6x^2y-2xy^2+4xyz中各项的公因式是（）

Question

m(x-y)+n(y-x)=(x-y)(_____) m(x-y-z)^2+n(y+z-x)=(x-y-z)(_____)
m(x-y-z)-x+y+z=(x-y-z)(_____)
6x^2y-2xy^2+4xyz中各项的公因式是（）

Answer 1

m(x-y)+n(y-x)=(x-y)(m-n)
m(x-y-z)^2+n(y+z-x)=(x-y-z)(mx-my-mz-n)
m(x-y-z)-x+y+z=(x-y-z)(m-1)
6x^2y-2xy^2+4xyz中各项的公因式是（2xy）