一元二次方程 (20 13:58:10)已知多项式x²+bx+c,当x=1时,多项式的值为0;当x=-1时,多项式的值为-1.求关于x的一元二次方程x²+bx+c=0和x²-bx+c+b-2=0的一个根.
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![一元二次方程 (20 13:58:10)已知多项式x²+bx+c,当x=1时,多项式的值为0;当x=-1时,多项式的值为-1.求关于x的一元二次方程x²+bx+c=0和x²-bx+c+b-2=0的一个根.](/uploads/image/z/1167467-59-7.jpg?t=%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8B+%2820+13%3A58%3A10%29%E5%B7%B2%E7%9F%A5%E5%A4%9A%E9%A1%B9%E5%BC%8Fx%26%23178%3B%2Bbx%2Bc%2C%E5%BD%93x%3D1%E6%97%B6%2C%E5%A4%9A%E9%A1%B9%E5%BC%8F%E7%9A%84%E5%80%BC%E4%B8%BA0%EF%BC%9B%E5%BD%93x%3D-1%E6%97%B6%2C%E5%A4%9A%E9%A1%B9%E5%BC%8F%E7%9A%84%E5%80%BC%E4%B8%BA-1.%E6%B1%82%E5%85%B3%E4%BA%8Ex%E7%9A%84%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8Bx%26%23178%3B%2Bbx%2Bc%3D0%E5%92%8Cx%26%23178%3B-bx%2Bc%2Bb-2%3D0%E7%9A%84%E4%B8%80%E4%B8%AA%E6%A0%B9.)
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