化简:7y(x-3y)²-(3y-x)²

来源:学生作业帮助网 编辑:六六作业网 时间:2024/06/01 08:05:30
化简:7y(x-3y)²-(3y-x)²化简:7y(x-3y)²-(3y-x)²化简:7y(x-3y)²-(3y-x)²7y(x-3y)&#

化简:7y(x-3y)²-(3y-x)²
化简:7y(x-3y)²-(3y-x)²

化简:7y(x-3y)²-(3y-x)²
7y(x-3y)²-(3y-x)²=7y(x-3y)²-(x-3y)²=(7y-1)(x-3y)²

=(7y-1)(x-3y)²