一元二次方程的实际问题1甲、乙两物体分别从相距70m的两处同时相向运动.甲第一分钟走2m,以后每分钟比前一分钟多走1m,乙每分钟走5m.(1)甲、乙开始运动后几分钟相遇?(2)如果甲、乙到
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![一元二次方程的实际问题1甲、乙两物体分别从相距70m的两处同时相向运动.甲第一分钟走2m,以后每分钟比前一分钟多走1m,乙每分钟走5m.(1)甲、乙开始运动后几分钟相遇?(2)如果甲、乙到](/uploads/image/z/6979060-28-0.jpg?t=%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8B%E7%9A%84%E5%AE%9E%E9%99%85%E9%97%AE%E9%A2%981%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E7%89%A9%E4%BD%93%E5%88%86%E5%88%AB%E4%BB%8E%E7%9B%B8%E8%B7%9D70m%E7%9A%84%E4%B8%A4%E5%A4%84%E5%90%8C%E6%97%B6%E7%9B%B8%E5%90%91%E8%BF%90%E5%8A%A8.%E7%94%B2%E7%AC%AC%E4%B8%80%E5%88%86%E9%92%9F%E8%B5%B02m%2C%E4%BB%A5%E5%90%8E%E6%AF%8F%E5%88%86%E9%92%9F%E6%AF%94%E5%89%8D%E4%B8%80%E5%88%86%E9%92%9F%E5%A4%9A%E8%B5%B01m%2C%E4%B9%99%E6%AF%8F%E5%88%86%E9%92%9F%E8%B5%B05m.%EF%BC%881%EF%BC%89%E7%94%B2%E3%80%81%E4%B9%99%E5%BC%80%E5%A7%8B%E8%BF%90%E5%8A%A8%E5%90%8E%E5%87%A0%E5%88%86%E9%92%9F%E7%9B%B8%E9%81%87%3F%EF%BC%882%EF%BC%89%E5%A6%82%E6%9E%9C%E7%94%B2%E3%80%81%E4%B9%99%E5%88%B0)
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