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 - 
 - \begin{frage}[1]
 - 	Klammern Sie so viel wie möglich aus:
 - 
 -  	 $$r^{7+n}-r^n = .............$$\TRAINER{$r^n(r^7-1)$}
 - \platzFuerBerechnungen{6}
 -   
 - \end{frage}
 - 
 
 
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