美国队长1女主角是谁:初二代数!!!!!!!!!help~~~~~~~~~~~`

来源：百度文库 编辑：中科新闻网 时间：2024/07/02 01:15:16
因式分解m^2-n^2+n-1/4
答案+过程~~~谢哈~~~

m^2-n^2+n-1/4
=m^2-(n^2-n+1/4)
=m^2-(n-1/2)^2
=(m+n-1/2)(m-n+1/2)

m^2-n^2+n-1/4
=m^2 - (n - 1/2)^2
=(m + n - 1/2)(m - n + 1/2)

m^2-n^2+n-1/4
=m^2-(n^2-n+1/4)
=m^2-(n-1/2)^2
=(m-n+1/2)(m+n-1/2)

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