4a²-(b+c)².因式分解.
4a²-(b+c)².因式分解.
数学人气：487 ℃时间：2020-04-15 17:22:28
优质解答
(2a-b-c)(2a+b+c)再求一道题。3a(x+2y)²-12a。万分感谢。
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