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sosnulenmath
@sosnulenmath
April 2022
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Bonjour j’ai besoin d’aide pour cet exercice merci d’avance
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lilii06
Bonjour, j’espère que c’est clair :)
A = 2c + (c-9)
= 2c + c - 9
= 3c - 9
B = 3b + b(2-6b)
= 3b + 2b - 7b
= -2b
C= 15x - (x^2-4+2x)
(Attention le - s’applique à tout les signes de la parenthèse)
= 15x - x^2 + 4 - 2x
= -x^2 + 13x + 4
D= 6z - z(3y + 4)
= 6z - 3yz + 4z
2 votes
Thanks 0
sosnulenmath
J’ai une seule question que signifie le ^
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A = 2c + (c-9)
= 2c + c - 9
= 3c - 9
B = 3b + b(2-6b)
= 3b + 2b - 7b
= -2b
C= 15x - (x^2-4+2x)
(Attention le - s’applique à tout les signes de la parenthèse)
= 15x - x^2 + 4 - 2x
= -x^2 + 13x + 4
D= 6z - z(3y + 4)
= 6z - 3yz + 4z