Réponse:
voila
Explications étape par étape:
A = -17+5x -9x +5
A= -17+5+5x -9x
A= -12+5x -9x
A=-12 -4x
A= -4(3+x)
B = -4 (-x-3)
B = -4(-x) - 4(-3)
B = 4x + 12
C = 10x- 3+3(1+2x)
C = 10x-3+3+6x
C = 10x+6x
C = 16x
D = -4-2x(1-2x)-8+2x
D = -10-2x(1-2x)
D = -2(5+x(1-2x))
D = -2(5+x-2x^2)
E = -4× x × x -2x (-6)
E = -4x^2 -2x (-6)
E = -2×2x (x-3)
E = -4x(x-3)
