约分4m-m²-4分之m-2
问题描述:
约分4m-m²-4分之m-2
答
4m-m²-4分之m-2
=(2-m)(m-2)分之m-2
约分=2-m分之1
约分4m-m²-4分之m-2
4m-m²-4分之m-2
=(2-m)(m-2)分之m-2
约分=2-m分之1