作业帮[(x+2y)²－﹙x－y﹚﹙x＋2y﹚－5y²]÷﹙2y﹚²等于多少
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/05 19:46:58
![[(x+2y)²－﹙x－y﹚﹙x＋2y﹚－5y²]÷﹙2y﹚²等于多少](/uploads/image/z/2984290-34-0.jpg?t=%5B%28x%2B2y%29%26%23178%3B%EF%BC%8D%EF%B9%99x%EF%BC%8Dy%EF%B9%9A%EF%B9%99x%EF%BC%8B2y%EF%B9%9A%EF%BC%8D5y%26%23178%3B%5D%C3%B7%EF%B9%992y%EF%B9%9A%26%23178%3B%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91)
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[(x+2y)²－﹙x－y﹚﹙x＋2y﹚－5y²]÷﹙2y﹚²等于多少
[(x+2y)²－﹙x－y﹚﹙x＋2y﹚－5y²]÷﹙2y﹚²等于多少
[(x+2y)²－﹙x－y﹚﹙x＋2y﹚－5y²]÷﹙2y﹚²等于多少
[(x+2y)²－﹙x－y﹚﹙x＋2y﹚－5y²]÷﹙2y﹚²
=(x²+4xy+4y²-x²-xy+2y²-5y²)÷4y²
=(3xy+y²)÷4y²
=(3x+y)/4y