(m-n)²能化简成(n-m)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 09:48:39
![(m-n)²能化简成(n-m)²](/uploads/image/z/8689616-8-6.jpg?t=%28m-n%29%26%23178%3B%E8%83%BD%E5%8C%96%E7%AE%80%E6%88%90%EF%BC%88n-m%EF%BC%89%26%23178%3B)
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(m-n)²能化简成(n-m)²
(m-n)²能化简成(n-m)²
(m-n)²能化简成(n-m)²
注意(-x)²=x²
所以(m-n)²
=[-(n-m)]²
=(n-m)²
(m-n)²
=【-(n-m)]²
=(n-m)²
所以(m-n)²
=[-(n-m)]²
=(n-m)²