- #1
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I think all people here are going to laugh at me, but I'm going to be strong enough to formulate this question which should be made when I was a schoolboy.
What is the demonstration of the 2nd order equation solution?
[tex] ax^2+bx+c=0[/tex]
then all teachers said:
[tex] x=\frac{-b+-\sqrt{b^2-4ac}}{2a}[/tex]
Where does it come from? How could I demonstrate that formula? We memorized it so well that we haven't ask ourselves how is proved.
What is the demonstration of the 2nd order equation solution?
[tex] ax^2+bx+c=0[/tex]
then all teachers said:
[tex] x=\frac{-b+-\sqrt{b^2-4ac}}{2a}[/tex]
Where does it come from? How could I demonstrate that formula? We memorized it so well that we haven't ask ourselves how is proved.