作业帮1/3x²‐[4x‐（1/2x‐5）+1/2x²]+3.
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/04 21:20:08
![1/3x²‐[4x‐（1/2x‐5）+1/2x²]+3.](/uploads/image/z/2474042-50-2.jpg?t=1%2F3x%26%23178%3B%E2%80%90%5B4x%E2%80%90%EF%BC%881%2F2x%E2%80%905%EF%BC%89%2B1%2F2x%26%23178%3B%5D%2B3.)
1/3x²‐[4x‐（1/2x‐5）+1/2x²]+3.
1/3x²‐[4x‐（1/2x‐5）+1/2x²]+3.
1/3x²‐[4x‐（1/2x‐5）+1/2x²]+3.
1/3x²‐[4x‐（1/2x‐5）+1/2x²]+3
＝1/3x²‐（4x-1/2x+5+1/2x²)+3
=1/3x²‐4x+1/2x-5-1/2x²+3
=(1/3x²‐1/2x²)+(-4x+1/2x)-5-+3
=-1/6x²-7/2x-2