初三一元二次方程.求答案,(有过程更好)1.设b取1到是1之间的偶数,c取任意正整数.则可以组成两个不相等实数根的一元二次方程x²-bx+c=0( )个A.50 B.55 C.57 D.582.已知方程x²+2px-q=0
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![初三一元二次方程.求答案,(有过程更好)1.设b取1到是1之间的偶数,c取任意正整数.则可以组成两个不相等实数根的一元二次方程x²-bx+c=0( )个A.50 B.55 C.57 D.582.已知方程x²+2px-q=0](/uploads/image/z/9304613-53-3.jpg?t=%E5%88%9D%E4%B8%89%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8B.%E6%B1%82%E7%AD%94%E6%A1%88%2C%28%E6%9C%89%E8%BF%87%E7%A8%8B%E6%9B%B4%E5%A5%BD%291.%E8%AE%BEb%E5%8F%961%E5%88%B0%E6%98%AF1%E4%B9%8B%E9%97%B4%E7%9A%84%E5%81%B6%E6%95%B0%2Cc%E5%8F%96%E4%BB%BB%E6%84%8F%E6%AD%A3%E6%95%B4%E6%95%B0.%E5%88%99%E5%8F%AF%E4%BB%A5%E7%BB%84%E6%88%90%E4%B8%A4%E4%B8%AA%E4%B8%8D%E7%9B%B8%E7%AD%89%E5%AE%9E%E6%95%B0%E6%A0%B9%E7%9A%84%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8Bx%26sup2%3B-bx%2Bc%3D0%EF%BC%88++%EF%BC%89%E4%B8%AAA%EF%BC%8E50+++B.55++++C.57++++D.582.%E5%B7%B2%E7%9F%A5%E6%96%B9%E7%A8%8Bx%26sup2%3B%2B2px-q%3D0)
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