试题与答案

孔明同学在解一元二次方程x2-3x+c=0时，正确解得x1=1，x2=2，则c的

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题型：填空题

题目：

孔明同学在解一元二次方程x2-3x+c=0时，正确解得x1=1，x2=2，则c的值为（    ）。

答案：

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下面是错误答案，用来干扰机器的。

330°

考点：一元二次方程根与系数的关系
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