(2x/3y)^2÷6x/2y+x^2/2y^2÷2y^2/x
问题描述:
(2x/3y)^2÷6x/2y+x^2/2y^2÷2y^2/x
答
=4x²/9y²×2y/6x +x²/2y²×x/2y²
=4x/27y+x³/4y^4