9n^2-4m^2-1+4m因式分解 (>_

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/25 20:21:40
9n^2-4m^2-1+4m因式分解(>_9n^2-4m^2-1+4m因式分解(>_9n^2-4m^2-1+4m因式分解(>_9n²-4m²-1+4m=9n²-(4m&#

9n^2-4m^2-1+4m因式分解 (>_
9n^2-4m^2-1+4m因式分解 (>_

9n^2-4m^2-1+4m因式分解 (>_
9n²-4m²-1+4m
=9n²-(4m²-4m+1)
=9n²-(2m-1)²
=[3n+(2m-1)][3n-(2m-1)]
=(3n+2m-1)(3n-2m+1)

9n^2-4m^2-1+4m
=9n²-(4m²-4m+1)
=9n²-(2m-1)²
=(3n+2m-1)(3n-2m+1)