-m四次方+m²n²(1)-m四次方+m²n²(2)4(m+n)²-9(m-n)²(3)(5a-b)²+20ab
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 01:39:14
![-m四次方+m²n²(1)-m四次方+m²n²(2)4(m+n)²-9(m-n)²(3)(5a-b)²+20ab](/uploads/image/z/3536462-38-2.jpg?t=-m%E5%9B%9B%E6%AC%A1%E6%96%B9%2Bm%26%23178%3Bn%26%23178%3B%EF%BC%881%EF%BC%89-m%E5%9B%9B%E6%AC%A1%E6%96%B9%2Bm%26%23178%3Bn%26%23178%3B%EF%BC%882%EF%BC%894%28m%2Bn%29%26%23178%3B-9%28m-n%29%26%23178%3B%EF%BC%883%EF%BC%89%285a-b%29%26%23178%3B%2B20ab)
-m四次方+m²n²(1)-m四次方+m²n²(2)4(m+n)²-9(m-n)²(3)(5a-b)²+20ab
-m四次方+m²n²
(1)-m四次方+m²n²
(2)4(m+n)²-9(m-n)²
(3)(5a-b)²+20ab
-m四次方+m²n²(1)-m四次方+m²n²(2)4(m+n)²-9(m-n)²(3)(5a-b)²+20ab
-m四次方+m²n²
=m²n²-m四次方
=m²(n²-m²)
=m²(n-m)(n+m)