Exercice 4 Factoriser, si possible, les expressions suivantes: a. 3xx+9 b. xxx+3x d. 5x + 25 e. 3x² + 9x Exercice 5 Factoriser les expressions suivantes : a. 3xx+6 b. 4x² - 3x d. 5x² + 4x e. 6x² + 9x c. 5r+r f. 6xy + 12x c. 15x² +5 d. 12x² - 4x
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Réponse:
exercice 4
a)3(xx+3)
b)x(xx+3)
d)5(x+5)
e)3x(x+3)
exercice 5
a)3(xx+2)
b)x(4x-3)
d)x(5x+4)
e)3x(2x+3)
c)r(5+1)
f)6x(y+2)
c)5(3x²+1)
d)4x(3x-1)