(3a+2b)²-(3a-4b)²怎么做?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/23 01:46:04
![(3a+2b)²-(3a-4b)²怎么做?](/uploads/image/z/1024728-24-8.jpg?t=%283a%2B2b%29%26%23178%3B-%283a-4b%29%26%23178%3B%E6%80%8E%E4%B9%88%E5%81%9A%3F)
(3a+2b)²-(3a-4b)²怎么做?
(3a+2b)²-(3a-4b)²怎么做?
(3a+2b)²-(3a-4b)²怎么做?
=3a²+2b²-3a²+4b²
=2b²+4b²
=6b²
收录互联网各类作业题目,免费共享学生作业习题
做题帮手机作业共收录了 千万级 学生作业题目
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/23 01:46:04
(3a+2b)²-(3a-4b)²怎么做?
(3a+2b)²-(3a-4b)²怎么做?
(3a+2b)²-(3a-4b)²怎么做?
=3a²+2b²-3a²+4b²
=2b²+4b²
=6b²