Bonjour
Développe et réduis les expressions suivantes :
a = 6(x+3)+(2x-3)(3x-5)
A = 6x + 18 + 6x^2 - 10x - 9x + 15
A = 6x^2 - 13x + 33
b = (8-3x)(4x+1)-x(x+2)
B = 32x + 8 - 12x^2 - 3x - x^2 - 2x
B = -13x^2 + 27x + 8
c = (2x+1)-(6x-1)(-3x+8)
C = 2x + 1 - (-18x^2 + 48x + 3x - 8)
C = 2x + 1 + 18x^2 - 51x + 8
C = 18x^2 - 49x + 9
d = 2x(4-7x)+(7x+5)(2x-6)
D = 8x - 14x^2 + 14x^2 - 42x + 10x - 30
D = -24x - 30
e = (3x+2)(x-5)-(x-5)
E = 3x^2 - 15x + 2x - 10 - x + 5
E = 3x^2 - 14x - 5
f = 3(7x^2 + 2x -8)-(4x+1)(5-9x)
F = 21x^2 + 6x - 24 - (20x - 36x^2 + 5 - 9x)
F = 21x^2 + 6x - 24 + 36x^2 - 11x - 5
F = 57x^2 - 5x - 29
