4m²-12mn+4m-6n+9n²-24因式分解
问题描述:
4m²-12mn+4m-6n+9n²-24因式分解
答
4m²-12mn+4m-6n+9n²-24
=4m²-12mn+9n²+4m-6n-24
=(2m-3n)²+2(2m-3n)-24
=(2m-3n+6)(2m-3n-4)