计算:(3m+2n)(3m-2n-1) =( ); (2x+3)( x2一5x- 发布时间:2017-05-17 18:33 │ 来源:www.tikuol.com 题型:填空题 问题: 计算:(3m+2n)(3m-2n-1) =( ); (2x+3)( x2一5x-1) =( ).
题型:填空题 给下列单词选择对应的反义词。( ) 1. happy( ) 2. hot ( ) 3. warm ( ) 4. easy ( ) 5. insideA. cool B. sad C. coldD. outsideE. hard 查看答案