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Exercice 2: Factoriser les expressions suivantes.
A = 23x - 23y
B = 18 + 18x
C = (x-2)(3x - 8) + (3 - x)(x - 2)
D= (9x + 4)(x + 5) - (x + 5)(-2x - 7)

Sagot :

Bonjour.

Merci de mettre une formule de politesse prochainement.

A = 23x-23y

A = 23(x-y)

B = 18+18x

B = 18(1+x)

C = (x-2)(3x-8)+(3-x)(x-2)

C = (x-2)(3x-8+3-x)

C = (x-2)(2x-8+3)

C = (x-2)(2x-5)

D = (9x+4)(x+5)-(x+5)(-2x-7)

D = (x+5)(9x+4-(-2x-7))

D = (x+5)(9x-4+2x+7)

D = (x+5)(11x+4+7)

D = (x+5)(11x+11)

D = (x+5)×11(x+1)

D = 11(x+5)(x+1)

Bonne journée.

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