(8-7x-6x²+2x³)+(x³+5x²+4x-1)-(-x²-3x+2x³-3)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 13:36:06
![(8-7x-6x²+2x³)+(x³+5x²+4x-1)-(-x²-3x+2x³-3)](/uploads/image/z/469481-41-1.jpg?t=%288-7x-6x%26%23178%3B%2B2x%26%23179%3B%EF%BC%89%2B%EF%BC%88x%26%23179%3B%2B5x%26%23178%3B%2B4x-1%29-%28-x%26%23178%3B-3x%2B2x%26%23179%3B-3%EF%BC%89)
(8-7x-6x²+2x³)+(x³+5x²+4x-1)-(-x²-3x+2x³-3)
(8-7x-6x²+2x³)+(x³+5x²+4x-1)-(-x²-3x+2x³-3)
(8-7x-6x²+2x³)+(x³+5x²+4x-1)-(-x²-3x+2x³-3)
原式=8-7x-6x²+2x³+x³+5x²+4x-1+x²+3x-2x³+3
=x³+10.