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5a(2a-3)-4a?

 17.09.2017
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5a(2a-3)-4a?

 

Hallo Gast!

 

\({\color{BrickRed}5a(2a-3)-4a}=10a^2-15a-4a\color{blue}=10a^2-19a\)

laugh  !

 17.09.2017

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