2/Factoriser les expressions suivantes :
A=6x² - 9x
B=x (2x + 1)2(x + 1)
C=16x² - 25+ (4x - 5)(7x + 3)
A=6x² - 9x
B=x (2x + 1)2(x + 1)
C=16x² - 25+ (4x - 5)(7x + 3)
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Bonjour !
Factoriser les expressions suivantes :
A=6x² - 9x= 3x(2x-3)
B=x (2x + 1)2(x + 1)= 2x (x+1)(2x+1)
C=16x² - 25+ (4x - 5)(7x + 3)= (4x-5)(4x+5)+ (4x-5)(7x + 3)= (4x-5)(4x+5+7x+3)
= (4x-5)(11x+8)