(a-1)x2-(a2+2)x+(a2+2a)=0用因式分解法求x
问题描述:
(a-1)x2-(a2+2)x+(a2+2a)=0用因式分解法求x
答
[(a-1)x-(a+2)]*(x-a)=0
解得x=(a+2)/(a-1)和x=a
ps:a不等于1