(2xy)^2(-1/3x^2y)^3/(1/3xy)^2
问题描述：
(2xy)^2(-1/3x^2y)^3/(1/3xy)^2
答
原式= - 4x²y² × (1/3) × x^6 y^3 ÷ (x²y²)
= - (4/3)× x²y² × x^4 y
=- (4/3)x^6 y³