化简:5(3a^2b-ab^2)-4(-ab^2+3a^2b)

问题描述:

化简:5(3a^2b-ab^2)-4(-ab^2+3a^2b)

5(3a^2b-ab^2)-4(-ab^2+3a^2b)
=15a²b-5ab²+4ab²-12a²b
=3a²b-ab²