Réponse :
E = -5x(x²-5x+5)
E = -5x³+25x²-25x
F =-3x²(3x^4-4x²-1)
F = -9x^6+12x^4+3x²
G = 6x(2x²-4x)
G = 6x³-24x²
H = 2x^4(3x²-5x²+3x)
H = 2x^4(-2x²+3x)
H = -4x^6+6x^5
I = 5y³(y³-6y²+12y-8)
I = 5y^6-30y^5+60y^4-40y³
J = (-2a³x^6)(5a^^5x^5-4a²x³-3ax^4)
J = -a^8x^9+8a^5x^9+6a^4x^10
Explications étape par étape :
