如何因式分解:4m²-9n²+h²-4mh

问题描述:

如何因式分解:4m²-9n²+h²-4mh

4m²-9n²+h²-4mh
=(4m²-4mh+h²)-9n²
=(2m-h)²-9n²
=(2m-h+3n)(2m-h-3n)