（a+b)²=(a-b)²+M
所以M=(a+b)^2-(a-b)^2=4ab
猜你喜欢
- 1这些地图是什么颜色?英语翻译
- 2一道初中数学不等式组的应用题,有能力者进来
- 3已知图中圆的面积是314平方厘米,求正方形的面积.
- 4Most of us have already known the problems----at the meting which wil be held tomorrow atternoon.
- 5i do not have a car.i have to d___ on the buses(首字母填空) 急!
- 6The girl is so short that she can't reach the apple （改为同义句）
- 7求圆心在x-y-4=0上,并且经过圆x平方+y平方+6x-4=0和圆x平方+y平方+6y-28=0交点的圆的方程
- 8离散题：设A={1234},R为A*A上的二元关系,对存在属于AXA,定义R推出a+b=c+d
- 9可不可以说 He go to school by his bike?为什么?
- 10He likes to do his homework at school.这句话中哪个是状语?