Bonsoir je doit factoriser :
A = ( 3x + 1) (7-2x) - (4x+9) (7-2x)
B= 4x^ - 12x +9
C = x^ + 14x + 49
Merci pour votre aide
A = ( 3x + 1) (7-2x) - (4x+9) (7-2x)
B= 4x^ - 12x +9
C = x^ + 14x + 49
Merci pour votre aide
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Verified answer
A = (7-2x)[(3x+1)-(4x+9)]A = (7-2x)(3x+1-4x-9)
A = (7-2x)(-x-8)
B = 4x²-12x+9
B = (2x-3)²
C = x²+14x+49
C = (x+7)²
Verified answer
BonsoirFactoriser :
A= ( 3x + 1) (7-2x) - (4x+9) (7-2x)
A= (-2x+7)(3x+1-4x-9)
A= (-2x+7)(-x-8)
B= 4x² - 12x +9
B= (2x-3)²
C = x² + 14x + 49
C= (x+7)²