已知二次不等式ax2+2x+b>0的解集{x|x≠-1a},且a>b,则a2+b 发布时间:2017-05-06 15:30 │ 来源:www.tikuol.com 题型:填空题 问题: 已知二次不等式ax2+2x+b>0的解集{x|x≠-1a},且a>b,则a2+b2a-b的最小值为______.
题型:填空题 It is the usual ________ in our school that if you spoil any material, you'll have to pay for it. [ ]A. order B. argumentC. opinion D. practice 查看答案