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Beweis

=0.4pt $ -p \pm \sqrt{p^2-4q} = -2p$ $ \Rightarrow $ $ -2p=-2p$

$ \left(-p+\sqrt{p^2-4q}\right)\cdot{}\left(-p-\sqrt{p^2-4q}\right)=4q$ $ \Rightarrow $ $ 4q=4q$


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2003-03-30