uire: A = (3x - 5)(x-3); B = 2(3x-1)(-x+7)
Mathématiques
annaelleetheve10
Question
uire: A = (3x - 5)(x-3); B = 2(3x-1)(-x+7)
1 Réponse
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1. Réponse hirondelle52
Bonjour,
A = (3x - 5)(x-3)
=3x² -9x -5x +15
= 3x² -14x +15
B = 2(3x-1)(-x+7)
= (6x-2 ) ( -x+7)
= -6x² +42x +2x² -14
= -4x² +42x -14