若a,b均为整数,当x=3-1时,代数式x2+ax+b的值为0,则ab的算术平方 发布时间:2017-04-14 14:57 │ 来源:www.tikuol.com 题型:填空题 问题: 若a,b均为整数,当x=3-1时,代数式x2+ax+b的值为0,则ab的算术平方根为______.
题型:填空题 With so many people ____ the Internet, it is difficult to see online movies at the same time. [ ]A. surf B. to surf C. surfing D. surfed 查看答案