Pascal question on finding the roots of a quadratic equation?

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The author posted a question in Programming

Pascal question on finding the roots of a quadratic equation? and got a better answer

Response from
What does the root come from it does not say There are a lot of similar questions with answers. Why not use it?

Response from 0[+++++]
What does the root come from it doesn't say Below is a bunch of similar questions with answers. Why not use it?

 

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