化简 (-3/2x²y)²(2x²-4xy+7y²) (-4x-3y²)(3y²-4x)这是两道题的化简
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 03:56:43
![化简 (-3/2x²y)²(2x²-4xy+7y²) (-4x-3y²)(3y²-4x)这是两道题的化简](/uploads/image/z/582584-32-4.jpg?t=%E5%8C%96%E7%AE%80+%28-3%2F2x%26%23178%3By%29%26%23178%3B%EF%BC%882x%26%23178%3B-4xy%2B7y%26%23178%3B%EF%BC%89+%EF%BC%88-4x-3y%26%23178%3B%EF%BC%89%EF%BC%883y%26%23178%3B-4x%EF%BC%89%E8%BF%99%E6%98%AF%E4%B8%A4%E9%81%93%E9%A2%98%E7%9A%84%E5%8C%96%E7%AE%80)
化简 (-3/2x²y)²(2x²-4xy+7y²) (-4x-3y²)(3y²-4x)这是两道题的化简
化简 (-3/2x²y)²(2x²-4xy+7y²) (-4x-3y²)(3y²-4x)
这是两道题的化简
化简 (-3/2x²y)²(2x²-4xy+7y²) (-4x-3y²)(3y²-4x)这是两道题的化简
1)
2)(-4x-3y²)(3y²-4x)=
-(4x+3y²)(3y²-4x)=(a+b)(a-b)=a²-b²=-16x²-9y4