计算:y(2y-3)=______;(x+3)(x-4)=______.-数学

题目简介

计算:y(2y-3)=______;(x+3)(x-4)=______.-数学

题目详情

计算:y(2y-3)=______;(x+3)(x-4)=______.
题型:填空题难度:中档来源:不详

答案

y(2y-3)
=y•2y+y•(-3)
=2y2-3y;
(x+3)(x-4)
=x2-4x+3x-12
=x2-x-12.
故答案为:2y2-3y,x2-x-12.

更多内容推荐