计算 (2xy/-mn²)÷8x²/y²×(-2m/y²)³

问题描述:

计算 (2xy/-mn²)÷8x²/y²×(-2m/y²)³

(2xy/-mn²)÷8x²/y²×(-2m/y²)³
=2xy/mn^2*y^2/8x^2* 8m^3/y^6
=2m^2/n^2xy^3