(-1/2xy^2)-1/6x(xy^3)^2=?

问题描述:

(-1/2xy^2)-1/6x(xy^3)^2=?

(-1/2xy^2)-1/6x(xy^3)^2=-1/2xy^2-1/6x^2y^6=-1/2xy^2(1+1/3xy^4)