关于x的方程(a+2)xa2-2-3x-1=0是一元二次方程,则a的值是( )A 发布时间:2017-04-20 06:39 │ 来源:www.tikuol.com 题型:选择题 问题: 关于x的方程(a+2)xa2-2-3x-1=0是一元二次方程,则a的值是( )A.a=±2B.a=-2C.a=2D.a=±2
题型:选择题 She was moving out of her old apartment she suddenly realized that the key to the new apartment wasn’t on her.A.untilB.onceC.whenD.before 查看答案