下列计算中正确的是[ ] A.(x+2)2=x2+2x+4 B.(﹣3﹣x)(3 发布时间:2017-05-15 20:51 │ 来源:www.tikuol.com 题型:选择题 问题: 下列计算中正确的是[ ]A.(x+2)2=x2+2x+4B.(﹣3﹣x)(3+x)=9﹣x2C.(﹣3﹣x)(3+x)=﹣x2﹣9+6xD.(2x﹣3y)2=4x2+9y2﹣12xy
题型:选择题 I wrote him a letter to show my_________of his thoughtfulness. [ ]A. achievement B. agreement C. attention D. appreciation 查看答案