x^2-2（a+b）x-ab（a-2)(b-2)
=x^2+[(ab-2a)-(ab-2b)]x-(ab-2b)(ab-2a)
=[x-(ab-2b)][x+(ab-2a)]
=(x-ab+2b)(x+ab-2a)
求x^2-2（a+b）x-ab（a-2)(b-2)的因式分解
求x^2-2（a+b）x-ab（a-2)(b-2)的因式分解
数学人气：255 ℃时间：2020-01-31 03:02:36
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