Exercice 1 Trouve le facteur commun puis factorise les expressions suivantes : A=15x+20 A=……………………………………………………………………………………………………………………………………….. B=x^2+x= B=……………
Mathématiques
jack52zd
Question
Exercice 1
Trouve le facteur commun puis factorise les expressions suivantes :
A=15x+20
A=………………………………………………………………………………………………………………………………………..
B=x^2+x=
B=…………………………………………………………………………………………………………………………………………………………………………………
C=(2x+1)(3x+5)+(2x+1)(x+1)
C=………………………………………………………………………………………………………………………………………..………………………………………………………………………………………………………………………………………..………… D=(5x-3)^2-(5x-3)(2+4x)
D=………………………………………………………………………………………………………………………………………..………………………………………………………………………………………………………………………………………..……………………
aidez moi svp
Trouve le facteur commun puis factorise les expressions suivantes :
A=15x+20
A=………………………………………………………………………………………………………………………………………..
B=x^2+x=
B=…………………………………………………………………………………………………………………………………………………………………………………
C=(2x+1)(3x+5)+(2x+1)(x+1)
C=………………………………………………………………………………………………………………………………………..………………………………………………………………………………………………………………………………………..………… D=(5x-3)^2-(5x-3)(2+4x)
D=………………………………………………………………………………………………………………………………………..………………………………………………………………………………………………………………………………………..……………………
aidez moi svp
1 Réponse
-
1. Réponse FamilyS
Bonjour,
A = 15x + 20
A = 5 * 3x + 5 * 4
A = 5(3x + 4)
B = x² + x
B = x * x + x * 1
B = x(x + 1)
C = (2x + 1)(3x + 5) + (2x + 1)(x + 1)
C = (2x + 1)(3x + 5 + x + 1)
C = (2x + 1)(4x + 6) = 2(2x + 1)(2x + 3)
D = (5x - 3)(5x -3) - (5x - 3)(2 + 4x)
D = (5x - 3)(5x - 3 - 2 - 4x)
D = (5x - 3)(x - 5)
Bonne journée :)