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Justinoou
@Justinoou
June 2021
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bonjour, est-ce que vous pouvez m'aider à faire ce dm qui est pour demain s'il vous plaît?
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jujumy
Exercice 1 :
A= 1/3 + 5/6 : 3/2
= 1/3 +5/6 * 3/2
= 1/3 + 10/18
= 6/18 + 10/18
= 16/18
= 8/9
B= 2-2*5/4
= 2 - 10/4
= 8/4 -10/4
= -2/4
= -1/2
Exercice 2
:
a) E= (3x-1)(x-1)+2(2x-1)
= 3x²-3x-x+1+4x-2
= 3x²-1
b) tu remplaces x par -2
tu trouves 11
Exercice 3:
On traduit sous forme d'équation, x étant la capacité totale :
500 + x/3 = x/2
x/2 - x/3 = 500
x/6 = 500
x = 500*6
x = 3000
Donc la capacité totale est de 3000 L
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bonjour, pouvez vous m'aider ? je n'y comprends rien
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A= 1/3 + 5/6 : 3/2
= 1/3 +5/6 * 3/2
= 1/3 + 10/18
= 6/18 + 10/18
= 16/18
= 8/9
B= 2-2*5/4
= 2 - 10/4
= 8/4 -10/4
= -2/4
= -1/2
Exercice 2 :
a) E= (3x-1)(x-1)+2(2x-1)
= 3x²-3x-x+1+4x-2
= 3x²-1
b) tu remplaces x par -2
tu trouves 11
Exercice 3:
On traduit sous forme d'équation, x étant la capacité totale :
500 + x/3 = x/2
x/2 - x/3 = 500
x/6 = 500
x = 500*6
x = 3000
Donc la capacité totale est de 3000 L