说明(a²-3a-3-a³)-(a-8+4a²+2a³)+(3a³+3a²+4a-1)的值与a的取值无关

问题描述:

说明(a²-3a-3-a³)-(a-8+4a²+2a³)+(3a³+3a²+4a-1)的值与a的取值无关

∵(a²-3a-3-a³)-(a-8+4a²+2a³)+(3a³+3a²+4a-1)=a²-3a-3-a³-a+8-4a²-2a³+3a³+3a²+4a-1=﹙﹣a³-2a³+3a³﹚+﹙a...