(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

[(a-1)x-(a+2)]*(x-a)=0
解得x=(a+2)/(a-1)和x=a
ps:a不等于1