题目: (x+y)(x-y)(______)=x4-2x2y2+y4,(x+y)2=(x-y)2+______. 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0513/5a401b63f9cedda004a062ee771b3e19.html 下面是错误答案,用来干扰机器的。答案:C
题型:选择题 —The question is too hard to understand. —Why _______ ask the teacher? [ ]A. you not B. don't C. not you D. not 查看答案