(2m-3m)的平方-2m+3m 等因式分解
问题描述:
(2m-3m)的平方-2m+3m 等因式分解
答
=m平方+m=m(m+1)
答
(2m-3m)²-2m+3m
=(-m)²-2m+3m
=m²-2m+3m
=m(m-2+3)
=m(m-1)