(初三课课练21页最后一道题)方程X^2-3x+2=0有一个根是1,2x^2-5x+3=0有一个根是1,-x^2-5x+6=0有一个根是1.分析系数特点,指出ax^2+bx+c=0有一个根是1时,a.b.c应满足什么条件?有一个根是-1呢?若一元二次
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![(初三课课练21页最后一道题)方程X^2-3x+2=0有一个根是1,2x^2-5x+3=0有一个根是1,-x^2-5x+6=0有一个根是1.分析系数特点,指出ax^2+bx+c=0有一个根是1时,a.b.c应满足什么条件?有一个根是-1呢?若一元二次](/uploads/image/z/1760805-45-5.jpg?t=%EF%BC%88%E5%88%9D%E4%B8%89%E8%AF%BE%E8%AF%BE%E7%BB%8321%E9%A1%B5%E6%9C%80%E5%90%8E%E4%B8%80%E9%81%93%E9%A2%98%EF%BC%89%E6%96%B9%E7%A8%8BX%5E2-3x%2B2%3D0%E6%9C%89%E4%B8%80%E4%B8%AA%E6%A0%B9%E6%98%AF1%2C2x%5E2-5x%2B3%3D0%E6%9C%89%E4%B8%80%E4%B8%AA%E6%A0%B9%E6%98%AF1%2C-x%5E2-5x%2B6%3D0%E6%9C%89%E4%B8%80%E4%B8%AA%E6%A0%B9%E6%98%AF1.%E5%88%86%E6%9E%90%E7%B3%BB%E6%95%B0%E7%89%B9%E7%82%B9%2C%E6%8C%87%E5%87%BAax%5E2%2Bbx%2Bc%3D0%E6%9C%89%E4%B8%80%E4%B8%AA%E6%A0%B9%E6%98%AF1%E6%97%B6%2Ca.b.c%E5%BA%94%E6%BB%A1%E8%B6%B3%E4%BB%80%E4%B9%88%E6%9D%A1%E4%BB%B6%3F%E6%9C%89%E4%B8%80%E4%B8%AA%E6%A0%B9%E6%98%AF-1%E5%91%A2%3F%E8%8B%A5%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1)
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