Réponse:
D= - 4(5x -2)
= - 20x +8
J= (5x - 2) (x +7)
= 5x^2 + 35x - 2x-14
= 5x^2+33x-14
E= 3(2x-4)+5(3-x)
= 6x-12+15-5x
= x+3
L= 6x-4(2x-8)
= 12x-48x-8x+32
= - 44x+32
C= 5x(-3x+2)
= - 15x^2+10x
K= (4x-3)(5x^2-2)
= 25x^2-8x-15x^2+6
= 10x^2-8x+6
F= 2x(5+3x)-4(x+5)
= 10x+6x^2-4x-20
= 6x+6x^2-20
H= - (3x^2-5x+2)-(3-2x+2x^2)
= - 3x^2+5x-2-3+2x-2x^2
= - 5x^2+7x-5
