Bonjour,
A = 5x + 9(6x +11)
= 5x +54x +99
= 59x +99
B = -8(x+5) - (3+5x)
-8x -40 -3 -5x
= -13x -43
C = (3x * 3)(9x - 1)
= 9x (9x-1)
= 81x² -9x
D=2+(4x +11)(x +11)
= 2+ 4x² +44x +11x +121
= 4x² +55x +123
E= -1-(4x - 11)(-3x - 9)
= -1 -( -12x² -36x +33x +99)
= -1 +12x² +36x -33x -99
= 12x² +3x -100
Bonjour,
Développer:
A = 5x + 9(6x +11)= 5x+54x+99= 59x+99
B = -8(x+5) - (3+5x)= -8x-40-3-5x= -13x-43
C = (3x * 3)(9x - 1)= 81x²-9x
D=2+(4x +11)(x +11)= 2+4x²+11x+44x+121= 4x²+55x+123
E= -1-(4x - 11)(-3x - 9)= -1-(-12x²+33x-36x+99)= -1-(-12x²-3x+99)= -1+12x²+3x-99
= 12x²+3x-100