因式分解1/4n^2+m^2-m

问题描述:

因式分解1/4n^2+m^2-m

(1/2n-m)²

1/4n^2+m^2-mn
=(n/2)²-mn+m²
=(n/2-m)²

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