factoriser 5{x-1)(x+2)-(x+2)^2+3(x+5)
Mathématiques
yehya
Question
factoriser 5{x-1)(x+2)-(x+2)^2+3(x+5)
2 Réponse
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1. Réponse winner123
bonjour
( 5 x - 5) ( x +2 ) - ( x +2) ( x +2) + ( 3 x + 15)
(x +2) ( 5 x -5 - x - 2 + 3 x + 15)
( x + 2 ) ( 7 x + 8) -
2. Réponse maudmarine
Factoriser
5 (x - 1) (x + 2) - (x + 2)² + 3 (x + 5)
= (5x - 5) (x + 2) - (x + 2) (x + 2) + ( 3x + 15)
= (x + 2) (5x - 5 - x - 2 + 3x + 15)
= (x + 2) (5x + 3x - x - 5 - 2 + 15)
= (x + 2) (7x + 8)