因式分解:(1)a^2-4b^2+3a-6b (2)4m^2-4m+2n-n^2

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/16 06:50:45
因式分解:(1)a^2-4b^2+3a-6b (2)4m^2-4m+2n-n^2

因式分解:(1)a^2-4b^2+3a-6b (2)4m^2-4m+2n-n^2
因式分解:(1)a^2-4b^2+3a-6b (2)4m^2-4m+2n-n^2

因式分解:(1)a^2-4b^2+3a-6b (2)4m^2-4m+2n-n^2
a^2-4b^2+3a-6b
=(a^2-4b^2)+(3a-6b)
=(a+2b)*(a-2b)+3(a-2b)
=(a-2b)(a+2b+3)

4m^2-4m+2n-n^2
=(4m^2-n^2)-(4m-2n)
=(2m+n)(2m-n)-2(2m-n)
=(2m-n)(2m+n-2)