¼x³y²·﹙﹣2xy²﹚+﹙-2x²y﹚·﹙-½xy﹚·3xyz
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 06:27:17
![¼x³y²·﹙﹣2xy²﹚+﹙-2x²y﹚·﹙-½xy﹚·3xyz](/uploads/image/z/1782090-18-0.jpg?t=%26%23188%3Bx%26%23179%3By%26%23178%3B%C2%B7%EF%B9%99%EF%B9%A32xy%26%23178%3B%EF%B9%9A%EF%BC%8B%EF%B9%99%EF%BC%8D2x%26%23178%3By%EF%B9%9A%C2%B7%EF%B9%99%EF%BC%8D%26%23189%3Bxy%EF%B9%9A%C2%B73xyz)
¼x³y²·﹙﹣2xy²﹚+﹙-2x²y﹚·﹙-½xy﹚·3xyz
¼x³y²·﹙﹣2xy²﹚+﹙-2x²y﹚·﹙-½xy﹚·3xyz
¼x³y²·﹙﹣2xy²﹚+﹙-2x²y﹚·﹙-½xy﹚·3xyz
¼x³y²·﹙﹣2xy²﹚+﹙-2x²y﹚·﹙-½xy﹚·3xyz
=-½x^4y^4+3x^4y³z
¼x³y²·﹙﹣2xy²﹚+﹙-2x²y﹚·﹙-½xy﹚·3xy²
=-½x^4y^4+x^4y^4
=½x^4y^4