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Discriminants (Posted on 2005-05-24) Difficulty: 2 of 5
Consider a quadratic equation with integer coefficients.
Is every integer a possible discriminant?

Prove it.

See The Solution Submitted by Jer    
Rating: 3.3333 (3 votes)

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A further note | Comment 6 of 7 |

Since every perfect square is also either 0 or 1(mod4), this limitation on discriminants still means that every perfect square can be a discriminant.

(I forgot I wanted to put that in my official solution)

  Posted by Jer on 2005-06-08 16:56:26
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