热心网友

x^4-3x^2+2x=x(x^3-3x+2)=x[(x^3-1)+(-3x+3)]=x[(x-1)(x^2+x+1)-3(x-1)]=x(x-1)(x^2+x-2)=x(x-1)(x-1)(x+2)=x(x+2)(x-1)^2

热心网友

同意楼上的~~~~~~

热心网友

x^4-3*x^2+2x=x^4-3*x^2+2x^2-2x^2+2x=x^2(x-1)(x-2)-2x(x-1)=(x-1)[x^2(x-2)-2x]=(x-1)(x^3-2x^2-2x)=x(x-1)(x^2-2x-2)