(-1/5xy)*(5/3x^2 y-10/3x^3y^2+1)
问题描述:
(-1/5xy)*(5/3x^2 y-10/3x^3y^2+1)
答
(-1/5xy)*(5/3x^2 y-10/3x^3y^2+1)
=-1/5xy*5/3x^2 y+1/5xy*10/3x^3y^2-1/5xy
=-1/3*x^3y^2+2/3*x^4y^3-1/5*xy