作业帮1、-5/3ab³+2a³b-9/2a³b-1/2a²b-a³b 2、4x²-[6x-(3x-1)-2x²]
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/11 02:08:38
![1、-5/3ab³+2a³b-9/2a³b-1/2a²b-a³b 2、4x²-[6x-(3x-1)-2x²]](/uploads/image/z/1999967-23-7.jpg?t=1%E3%80%81-5%2F3ab%26%23179%3B%2B2a%26%23179%3Bb-9%2F2a%26%23179%3Bb-1%2F2a%26%23178%3Bb-a%26%23179%3Bb+2%E3%80%814x%26%23178%3B-%5B6x-%283x-1%29-2x%26%23178%3B%5D)
1、-5/3ab³+2a³b-9/2a³b-1/2a²b-a³b 2、4x²-[6x-(3x-1)-2x²]
1、-5/3ab³+2a³b-9/2a³b-1/2a²b-a³b 2、4x²-[6x-(3x-1)-2x²]
1、-5/3ab³+2a³b-9/2a³b-1/2a²b-a³b 2、4x²-[6x-(3x-1)-2x²]
1、-5/3ab³+2a³b-9/2a³b-1/2a²b-a³b
=-5/3ab³-7/2a³b-1/2a²b
2、4x²-[6x-(3x-1)-2x²]
=4x²-6x+3x-1+2x²
=6x²-3x-1