5ab^2-[2a^2b-2(a^2b-2ab^2)](注：^代表次方）列如：a^2b代表a的2次方b
问题描述：
5ab^2-[2a^2b-2(a^2b-2ab^2)](注：^代表次方）列如：a^2b代表a的2次方b
答
5ab^2-[2a^2b-2(a^2b-2ab^2)]
=5ab^2-(2a^2b-2a^2b+4ab^2)
=5ab^2-4ab^2
=ab^2
应该是这样了\(^o^)/