问题
填空题
计算5x2y•(-3xy3)=______;-3xy(2x-3y)=______.
答案
5x2y•(-3xy3)=-15x3y4;
-3xy(2x-3y)=-6x2y+9xy2;
故填:-15x3y4,-6x2y+9xy2.
计算5x2y•(-3xy3)=______;-3xy(2x-3y)=______.
5x2y•(-3xy3)=-15x3y4;
-3xy(2x-3y)=-6x2y+9xy2;
故填:-15x3y4,-6x2y+9xy2.