作业帮(6m²-4m-3)+(2m²-4m+1)
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/24 07:50:39
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(6m²-4m-3)+(2m²-4m+1)
(6m²-4m-3)+(2m²-4m+1)
(6m²-4m-3)+(2m²-4m+1)
原式=6m²-4m-3+2m²-4m+1
=8m²-8m-2
(6m²-4m-3)+(2m²-4m+1)
=(6+2)m²-(4+4)m-3+1
=8m²-8m-2
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