作业帮[(a-2b)²-(a+3b)(a-2b)]/(-5b)化简.
来源：学生作业帮助网 编辑：作业帮 时间：2024/12/02 12:23:11
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[(a-2b)²-(a+3b)(a-2b)]/(-5b)化简.
[(a-2b)²-(a+3b)(a-2b)]/(-5b)化简.
[(a-2b)²-(a+3b)(a-2b)]/(-5b)化简.
原式=[(a-2b)（a-2b-a-3b)]/(-5b)=（a-2b）（-5b）/（-5b）=a-2b