Johannes Rau (born January 16, 1931) has been the President of Germany since July 1, 1999.
He was born in Wuppertal-Barmen.
See also: Germany, Germany/Politics.
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... + \left( \frac{b}{a} \right) x + \frac{c}{a}=0 </math> which is equivalent to <math>x^2+\frac{b}{a}x=-\frac{c}{a}.</math> The ...