-1/2x²·(2/3y²-1/3x+1/4)计算

问题描述:

-1/2x²·(2/3y²-1/3x+1/4)计算

=-1/3x²y²+1/6x³-1/8x²

原式=-1/3x²y²+1/6x³-1/8x²