Réponse:
a) 45a + 60 = 15 (a + 4)
-10a - 15 = -5 (2a + 3)
8a - 8 = 8 (a - 1)
-8a + 20 = -4 (2a-5)
b) 3a^2 - 5a = a ( 3a - 5)
7a^5 - 5a^3 = a^3 ( 7a^2 - 5)
4a^3 - 6a^2 + 2a = 2a (2a^2 - 3a + 1)
12a^4 - 48a^2 -60a = 12a (a^3 -4a - 5)
c)3ab - 2ac = a (3b - 2c)
10xy - 15xz = 5x (2y- 3z)
-6x-6y = -6 (x + y)
-6bc + 3b - 3ab = 3b (-2c + 1 - a)
d) 24a^2b^2 + 18ab^3 = 6ab^2( 4a + 3b )
-12a^2x^3 + 30ax^2 = -6ax^2 (-2a^2x + 5 )
4a^2b^3 - 6ab^4 + 2ab = 2ab (2ab^2 - 3b^3 + 1)
15y^4 - 12x^4y^6 + 3x^6y^4 = 3x^4y^4 (5 - 4y^2 + x^2)
J'espère que ça t'a aidé!!:)
