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Bonjour, factoriser les expressions suivantes : 

A= (1-4x) ^{2} + (5x+7)(1-4x)     
B = 3x(8-2x) - (8-2x) ^{2} 
C =(6x+3) ^{2} -- (6x-3)(6x+3)

Sagot :

WINNER123
Bonjour
A = (1-4x)² + (5x +7) (1-4x)
A = (1-4x)(1-4x) +(5x+7)
A = (1-4x)(1-4x +5x+7)
A = (1-4x)(x +8)

B = 3x(8-2x) - (8-2x)²
B = 3x (8-2x) mais pas sûre

C= (6x+3)² - (6x-3)(6x+3)
C = (6x+3)(6x+3) - (6x-3)(6x+3)
C = (6x+3)(6x-3 -6x +3)
C = (6x+3)

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