化简4ab-2(a^2-2ab)-a(2ab-a^2)
问题描述:
化简4ab-2(a^2-2ab)-a(2ab-a^2)
答
化简4ab-2(a^2-2ab)-a(2ab-a^2)
=4ab-2(a^2-2ab)+a(a^2-2ab)
=4ab+(a-2)(a^2-2ab)