作业帮合并同类项 6a²-[7a²-3a-(a²-4a)]
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/20 12:40:59
![合并同类项 6a²-[7a²-3a-(a²-4a)]](/uploads/image/z/603014-14-4.jpg?t=%E5%90%88%E5%B9%B6%E5%90%8C%E7%B1%BB%E9%A1%B9+6a%26%23178%3B-%5B7a%26%23178%3B-3a-%28a%26%23178%3B-4a%29%5D)
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合并同类项 6a²-[7a²-3a-(a²-4a)]
合并同类项 6a²-[7a²-3a-(a²-4a)]
合并同类项 6a²-[7a²-3a-(a²-4a)]
6a²-[7a²-3a-(a²-4a)]
= 6a²-[7a²-3a-a²+4a]
= 6a²-[6a²+a]
= 6a²-6a²-a
=-a