(-1/2xy²)³-1/6x(xy³)² ,急,
问题描述:
(-1/2xy²)³-1/6x(xy³)² ,急,
答
(-1/2xy²)³-1/6x(xy³)²
=-1/8x^3y^6-1/6x^3y^6
=-7/24x^3y^6