A(x)=2x² - 6x -3(x-3)

 a) développer.

 b) factoriser.

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Grade: Education Subject: mathematiques

A(x)=2x² - 6x -3(x-3)

 a) développer.

 b) factoriser.

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Développer :
2x² - 6x - 3x + 9
= 2x² - 9x + 9
Factoriser : 
2 x ² - 3(2x  + x - 3)