已知a是方程x2+2x-3=0的一个根,则代数式2a2+4a+3的值为_____ 发布时间:2017-04-22 20:38 │ 来源:www.tikuol.com 题型:填空题 问题: 已知a是方程x2+2x-3=0的一个根,则代数式2a2+4a+3的值为______.
题型:填空题 Energy drinks are not allowed in Australia but are brought in from New Zealand.[ ]A. to make B. to be made C. to have been made D. to be making 查看答案