Développer et réduire chacune des expressions suivantes: F=-3(5x-2) G=(3x-5)(2x+3) H=(-2x-1)(3x-7) I=3x-2(3x-1) J=(2x+3) (x-5)+(4x-2)(-x+1) K=(-4+7)(x-1)-(x-3)(

Bonjour
F = -3(5x-2) = -15x+10
G = (3x-5)(2x+3)= 6x^2+9x-10x-15
G= 6x^2-x-15
H = (2x+2)(3x-7) = 6x^2-14+6x-14
H= 6x^2+6x
I = 3x-2(3x-1) = 3x-6x+2
I = -3x+2
J = (2x+3)(x-5)+(4x+2)(-x+1) =2x^2-10x+3x-15-4x^2+4x-2x+2
J = -2x2-5x-13
K= (-4+7)(x-1)-(x-3)(2x+3)=-4x+4+7x-7-(2x^2+3x-6x-9)
K= 4x+4+7x-7-2x^2-3x+6x+9
K = -2x^2+14x+6
Bon courage.