1 Pour réviser Développer puis simplifier les expressions suivantes. A = 3x(x + 1) + 2x = B = (x + 7)(x - 2) = C= (5x + 6) (2x - 1) = - - - + - D = (x + 2)(x -
Mathématiques
stephanacharsis972
Question
1 Pour réviser Développer puis simplifier les expressions suivantes.
A = 3x(x + 1) + 2x =
B = (x + 7)(x - 2) =
C= (5x + 6) (2x - 1) = - - - + -
D = (x + 2)(x - 5) + (x − 3)(x + 4) =
E = 3(x – a) + a(3 - x) + x(a – 3) =
F = (x - 6)(x + 1) - (x + 6)(x - 1) = -
A = 3x(x + 1) + 2x =
B = (x + 7)(x - 2) =
C= (5x + 6) (2x - 1) = - - - + -
D = (x + 2)(x - 5) + (x − 3)(x + 4) =
E = 3(x – a) + a(3 - x) + x(a – 3) =
F = (x - 6)(x + 1) - (x + 6)(x - 1) = -
1 Réponse
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1. Réponse zaineb15
Réponse:
a= 3x²+3x+2x
=3x²+5x
b=x²-2x+7x-14
= x²+5x-14
c= 10x²-5x+12x-6
10x²+7x -6
d= x²-5x+2x-10+x²+4x-3x-12
2x²-2x -12
e= 3x-3a+3a-ax+ax-3x
=0
f= x²+x-6x-6-x²+x-6x+6
=-10x