作业帮下面去括号错误的是（ ）A.a²-（a-b+c）=a²-a+b-cB.5+a-2（3a-5）=5+a-6a+5C.3a-1/3（3a²-2a）=3a-a²+2/3aD.a³-[a²-（-b）]a³-a²-b
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/29 15:49:21
![下面去括号错误的是（ ）A.a²-（a-b+c）=a²-a+b-cB.5+a-2（3a-5）=5+a-6a+5C.3a-1/3（3a²-2a）=3a-a²+2/3aD.a³-[a²-（-b）]a³-a²-b](/uploads/image/z/13985889-33-9.jpg?t=%E4%B8%8B%E9%9D%A2%E5%8E%BB%E6%8B%AC%E5%8F%B7%E9%94%99%E8%AF%AF%E7%9A%84%E6%98%AF%EF%BC%88+%EF%BC%89A.a%26%23178%3B-%EF%BC%88a-b%2Bc%EF%BC%89%3Da%26%23178%3B-a%2Bb-cB.5%2Ba-2%EF%BC%883a-5%EF%BC%89%3D5%2Ba-6a%2B5C.3a-1%2F3%EF%BC%883a%26%23178%3B-2a%EF%BC%89%3D3a-a%26%23178%3B%2B2%2F3aD.a%26%23179%3B-%5Ba%26%23178%3B-%EF%BC%88-b%EF%BC%89%5Da%26%23179%3B-a%26%23178%3B-b)
下面去括号错误的是（ ）A.a²-（a-b+c）=a²-a+b-cB.5+a-2（3a-5）=5+a-6a+5C.3a-1/3（3a²-2a）=3a-a²+2/3aD.a³-[a²-（-b）]a³-a²-b
下面去括号错误的是（ ）
A.a²-（a-b+c）=a²-a+b-c
B.5+a-2（3a-5）=5+a-6a+5
C.3a-1/3（3a²-2a）=3a-a²+2/3a
D.a³-[a²-（-b）]a³-a²-b
下面去括号错误的是（ ）A.a²-（a-b+c）=a²-a+b-cB.5+a-2（3a-5）=5+a-6a+5C.3a-1/3（3a²-2a）=3a-a²+2/3aD.a³-[a²-（-b）]a³-a²-b
A.a²-（a-b+c）=a²-a+b-c
B.5+a-2（3a-5）=5+a-6a+5 这个错,-5没有乘系数-2
C.3a-1/3（3a²-2a）=3a-a²+2/3a
D.a³-[a²-（-b）]a³-a²-b
B.5+a-2（3a-5）=5+a-6a+5
应为5+a-2（3a-5）=5+a-6a+10
B,去掉括号应该是5+a-6a+10
bc