下列多项式因式分解正确的是 [ ] A. 4-4a+a2=(a-2)2 B. 1 发布时间:2017-05-12 09:35 │ 来源:www.tikuol.com 题型:选择题 问题: 下列多项式因式分解正确的是 [ ]A. 4-4a+a2=(a-2)2 B. 1+4a-4a2=(1-2a) 2 C. 1+x2=(1+x)2D. x2+xy+y2=(x+y)2
题型:选择题 The actress received an award for her ________ to charity work.A.addictionB.devotionC.allowanceD.application 查看答案