我要正确答案:(4a^2-5ab^2)-2(3a^2b-4ab^2)

问题描述:

我要正确答案:(4a^2-5ab^2)-2(3a^2b-4ab^2)

(4a^2-5ab^2)-2(3a^2b-4ab^2)
=4a²-5ab²-6a²b+8ab²
=4a²+3ab²-6a²b
=a(4a+3b²-6ab)