若(x+2y)2=x2﹣2xy+4y2+M成立,则M的值为[ ] A.﹣4xy 发布时间:2017-05-15 18:05 │ 来源:www.tikuol.com 题型:选择题 问题: 若(x+2y)2=x2﹣2xy+4y2+M成立,则M的值为[ ]A.﹣4xyB.4xyC.﹣6xyD.6xy
题型:选择题 —Could you tell me yesterday?—Because my bike was broken on my way here.A.why you came lateB.why do you come lateC.why you come lateD.why did you come late 查看答案