Bonjour , je n'arrive pas a faire les exercices en Maths

Factorise les expressions suivantes :
A= 6x + 18
B= 5x au carré - 15x
C= (3x - 1) (x - 8) - (2x + 4) (x - 8)

Merci cordialement

By: USER6817
28 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
Bonjour , je n'arrive pas a faire les exercices en Maths

Factorise les expressions suivantes :
A= 6x + 18
B= 5x au carré - 15x
C= (3x - 1) (x - 8) - (2x + 4) (x - 8)

Merci cordialement
Asked by:
229 Viewed 229 Answers

Answer (229)

Best Answer
(213)
bonjour,

A= 6x + 18
   = 6(x+3)

B= 5x² - 15x
   = 5x(x-3)

C= (3x - 1) (x - 8) - (2x + 4) (x - 8)
  = (x-8)(3x-1-2x-4)
  = (x-8)(x-5)

Answered on 28 Agustus 2025
(279)

Bonjour,

A = 6x + 18

A = 6x + 6X3

A = 6 (x+3)



B = 5x^2 - 15x

B = 5x X x - 5x X 3

B = 5x (x-3)


C = (3x - 1) (x-8) - (2x + 4) (x - 8)

C = (x-8) (3x -1 - 2x -4)

C = (x-8) (x-5)

Answered on 28 Agustus 2025

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