因式分解x^2y-y^2z+z^2x-x^2z+y^2x+z^2y-2xyz
2个回答

X^2Y-Y^2Z+Z^2X-X^2Z+Y^2X+Z^2Y-2XYZ

=X^2Y+Y^2X-Y^2Z+Z^2Y-XYZ+Z^2X-X^2Z-XYZ

=XY(X+Y)+YZ(Z-Y-X)+XZ(Z-X-Y)

=XY(X+Y)+Z(Z-X-Y)(X+Y)

=(X+Y)[XY+Z(Z-X-Y)]

=(X+Y)(XY+Z^2-ZX-ZY)

=(X+Y)(Z^2-ZX+XY-ZY)

=(X+Y)[Z(Z-X)+Y(X-Z)]

=(X+Y)(X-Z)(Y-Z)

希望是对的.