Citaat:
Originally posted by BlueWolf
Trouwens niet zo moeilijk af te leiden 
(a + b)³
= (a + b)(a + b)²
= (a + b) (a² + 2ab + b²)
= a³ + 2a²b + ab² + a²b + 2 ab² + b³
= a³ +3a²b + 3ab² + b³
Het klopt dus 
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mja je hebt gelijk! dankje!!!!!!! 
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