标上题号,Thanks!
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/17 01:16:44
标上题号,Thanks!
标上题号,Thanks!
标上题号,Thanks!
12:=(m-3n+3m-2n)(m-3n-3m+2n)=(5n-4m)(2m+n) 14:=-(x^2-4x+4)=-(x-2)^2
标上题号,Thanks!
标上题号,Thanks!
标上题号,Thanks!
12:=(m-3n+3m-2n)(m-3n-3m+2n)=(5n-4m)(2m+n) 14:=-(x^2-4x+4)=-(x-2)^2