求证(a³+4a²-3a+2)-(3a³-2a²+a-5)+(2a³+4a-6a²-7)的值与a无
问题描述:
求证(a³+4a²-3a+2)-(3a³-2a²+a-5)+(2a³+4a-6a²-7)的值与a无
如题
答
(a³+4a²-3a+2)-(3a³-2a²+a-5)+(2a³+4a-6a²-7)=a³+4a²-3a+2-3a³+2a²-a+5+2a²+4a-6a²-7=-10