Bonjour j'ai besoin d'aide pour un devoir en mathématiques:
Ex 1
a) factoriser chaque expression
a)4x(au carré)+4 b) 8-2a c)5xy-10x
b) develloper puis reduire chaque expression:
A= -7(x-2) B=(4x+5) (x+3)
C= (9+x) (3x-1) D= (6x-2) (5x-3)


Merci d'avance :)

By: USER1822
27 Agustus 2025 mathematiques 5 minutes
4.5
325 views 325 comments 13 shares

Question

Grade: Education Subject: mathematiques
Bonjour j'ai besoin d'aide pour un devoir en mathématiques:
Ex 1
a) factoriser chaque expression
a)4x(au carré)+4 b) 8-2a c)5xy-10x
b) develloper puis reduire chaque expression:
A= -7(x-2) B=(4x+5) (x+3)
C= (9+x) (3x-1) D= (6x-2) (5x-3)


Merci d'avance :)
Asked by:
325 Viewed 325 Answers

Answer (325)

Best Answer
(655)
Ex 1
a) Factoriser chaque expression
a) 4x² + 4
= 4 (x² + 1)

b) 8 - 2a
= 4 (2 - a)

c) 5xy - 10x
= 5x (y - 2)

b) Développer puis réduire chaque expression :
A= -7(x-2)
A = - 7x + 14

B=(4x+5) (x+3)
B = 4x² + 12x + 5x + 15
B = 4x² + 17x + 15

C= (9+x) (3x-1)
C = 27x - 9 + 3x² - x
C = 3x² + 26x - 9

D= (6x-2) (5x-3)
D = 30x² - 18x - 10x + 6
D = 30X² - 28x + 6
Answered on 27 Agustus 2025

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