Bonjour
Simplifier au maximum :
D=4-(3x-2)+(5x+3)
D = 4 - 3x + 2 + 5x + 3
D = - 3x + 5x + 4 + 2 + 3
D = 2x + 9
Développer et simplifier E et F
E=(3x-2)(4x+3)
E = 12x² + 9x - 8x - 6
E = 12x² + x - 6
F=2(5x-1)-(3x+1)(5x+2)
F = 10x - 1 - (15x² + 6x + 5x + 2)
F = 10x - 1 - 15x² - 6x - 5x - 2
F = - 15x² + 10x - 6x - 5x - 1 - 2
F = - 15x² - x - 3.
