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打卡交作业

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都说有我就有趣

#1 Created at ... [Delete] [Delete and Lock User] 
r1 = (-b + Math.sqrt(b * b - 4 * a * c)) / 2 * a;
r2 = (-b - Math.sqrt(b * b - 4 * a * c)) / 2 * a;

lookphp

#2 Created at ... [Delete] [Delete and Lock User]

这个结果对吗，有没有课代表了

杨森-ys

#3 Created at ... [Delete] [Delete and Lock User]

可以看看我的

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