化简3/(x²+2xy+y²)-4/(x²-2xy+y²)+5/(x²-y²)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/20 03:58:44
![化简3/(x²+2xy+y²)-4/(x²-2xy+y²)+5/(x²-y²)](/uploads/image/z/1122200-8-0.jpg?t=%E5%8C%96%E7%AE%803%2F%EF%BC%88x%26%23178%3B%2B2xy%2By%26%23178%3B%EF%BC%89-4%2F%EF%BC%88x%26%23178%3B-2xy%2By%26%23178%3B%EF%BC%89%2B5%2F%EF%BC%88x%26%23178%3B-y%26%23178%3B%EF%BC%89)
化简3/(x²+2xy+y²)-4/(x²-2xy+y²)+5/(x²-y²)
化简3/(x²+2xy+y²)-4/(x²-2xy+y²)+5/(x²-y²)
化简3/(x²+2xy+y²)-4/(x²-2xy+y²)+5/(x²-y²)
好像有点小问题啊.
通分后分母是(x+y)^2*(x-y)^2
分子是4x^2-14xy-6y^2 分子没办法化简了.