合并多项式:-p²-p²-p²- -3x²y+2x²y+3xy²-2xy²
问题描述:
合并多项式:-p²-p²-p²- -3x²y+2x²y+3xy²-2xy²
答
-p²-p²-p²- -3x²y+2x²y+3xy²-2xy²
=-3p²