6a^5b^4÷(4ab)^2+(-1/8ab)(-5a^2b)计算
问题描述：
6a^5b^4÷(4ab)^2+(-1/8ab)(-5a^2b)计算
答
=3/8a^3b^2+5/8a^3b^2
=a^3b^2