a) (5x+2) -3 (x+1) b) (5x-1)(5x+1) - ( 6x+5)( x-4) SVP mercii
Mathématiques
adel77100lol
Question
a) (5x+2) -3 (x+1)
b) (5x-1)(5x+1) - ( 6x+5)( x-4)
SVP mercii
b) (5x-1)(5x+1) - ( 6x+5)( x-4)
SVP mercii
1 Réponse
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1. Réponse yayamohamed
Réponse:
a)
(5x+2) -3(x+1) = 5x + 2 - 3x - 3
= 2x -1
b)
(5x-1)(5x+1) - ( 6x+5)( x-4) = 25x² -1 - (6x² -24 +5x -20)
= 25x² -1 - (6x² +5x -44 )
= 25x² -1 - 6x² -5x +44
= 19x² - 5x + 43