¼x³y²·﹙﹣2xy²﹚+﹙-2x²y﹚·﹙-½xy﹚·3xyz
问题描述:
¼x³y²·﹙﹣2xy²﹚+﹙-2x²y﹚·﹙-½xy﹚·3xyz
答
¼x³y²·﹙﹣2xy²﹚+﹙-2x²y﹚·﹙-½xy﹚·3xyz
=-½x^4y^4+3x^4y³z