当x为何值时x+2\x²+2x等于0
问题描述:
当x为何值时x+2\x²+2x等于0
答
(x²+2x)/(x+2)=0
∴x+2≠0,x²+2x=0
∴x=0
当x为何值时x+2\x²+2x等于0
(x²+2x)/(x+2)=0
∴x+2≠0,x²+2x=0
∴x=0