(-x+3)(3x-1) pour x=-2/3

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Grade: Education Subject: mathematiques
(-x+3)(3x-1) pour x=-2/3
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Bonjour;

(-x+3)(3x-1)

-3x² +x +9x -3

= -3x² +10x -3

-> -3(-2/3)²  +10* -2/3

= -3* 4/9 -20/3

= -12/ 9-20/3

= -12/9 -20/3*3/3

= -12/9  -60/9

= -72/9 = -8