They should clean the room every day 改为被动时态
问题描述:
They should clean the room every day 改为被动时态
已知二次函数y=x2-4x+3的图像与x轴交与A,B两点(点A在点B的左边),与y轴交与点C,顶点为D.
求(1)求以A.B.C.D为顶点的四边形的面积;(2)在抛物线上是否存在点P,使得三角形ABP的面积是三角形ABC的3倍?若存在,求出点P的坐标,请说明理由.
答
1、They should clean the room every day .
The room should be cleaned every day.
2、第二个好麻烦