/kaoyan/%E6%95%B0%E5%AD%A6/%E9%AB%98%E7%AD%89%E6%95%B0%E5%AD%A6/%E7%AC%AC4%E7%AB%A0%20%E5%BE%AE%E5%88%86%E6%96%B9%E7%A8%8B/%E7%9F%A5%E8%AF%86%E7%82%B9/4.7%20%E7%BB%99%E5%87%BA%E5%85%B7%E4%BD%93%E5%8F%98%E6%8D%A2%EF%BC%8C%E6%B1%82%E8%A7%A3%E5%BE%AE%E5%88%86%E6%96%B9%E7%A8%8B/ to /kaoyan/math/advanced-math/ch04-wei-fen-fang-cheng/knowledge/4.7-gei-chu-ju-ti-bian-huan-qiu-jie-wei-fen-fang-cheng