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bonjour jai deux calculs à factoriser svp
f) (5-x) (5x+3)+5-x

g) 4x (2x-5) - 3 (2x-5) (2x-5)​

Sagot :

JILALIA2006

Réponse :

f) (5-x)(5x+3)+(5-x)×1 = (5-x)(5x+3+1)

= (5-x)(5x+4)

g) 4x (2x-5) - 3(2x-5) (2x-5)= (2x-5) (4x - 3(2x-5)

= (2x-5) (4x- 6x + 15)

= (2x-5) ( -2x +15)

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