解方程:4(x-3)2-(2x+1)2=(3x+1)(1-3x)+9x2 发布时间:2017-04-26 11:00 │ 来源:www.tikuol.com 题型:计算题 问题: 解方程:4(x-3)2-(2x+1)2=(3x+1)(1-3x)+9x2
题型:计算题 He asked his father why he was not able to hatch chickens ______hens could.A.howeverB.whileC.asD.although 查看答案