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Adeline45
@Adeline45
April 2019
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Bonjour pouvez-vous m'aider merci.
Calculer les expressions suivantes pour a=-2 et b=+3:
A=2b+3a-2.
B=(2b+3)(a-2).
C=2(a-3b)+1.
D=2a-3b/a+b
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nathalienouts
A=2b+3a-2.
A = 2x3+3x(-2)-2
A = 6-6-2
A = -2
B=(2b+3)(a-2).
B = (2x3+3)(-2-2)
B = (6+3)(-4)
B = 9x-4
B = -36
C=2(a-3b)+1.
C = 2(-2-3x3)+1
C = 2(-2-9)+1
C = 2x-11 + 1
C = -22+1
C = -21
D=2a-3b/a+b
D = 2x(-2) - 3x3/-2 + 3
D = -4+9/2 +3
D = 9/2-1
D = 9/2-2/2
D = 7/2
2 votes
Thanks 1
nathalienouts
de rien
em09
tu t'es trompée pour la D!
em09
A= 2*3+3*(-2)-2
A= 6-6-2
A= -2
B= (2*3+3)(-2-2)
B= 9*(-4)
B= -36
C= 2(-2-3*3)+1
C= 2(-2-9)+1
C= 2*(-11)+1
C= -22+1
C= -21
D= 2*(-2)-3*3/-2+3
D= -4-9/1
D= -13
2 votes
Thanks 1
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A = 2x3+3x(-2)-2
A = 6-6-2
A = -2
B=(2b+3)(a-2).
B = (2x3+3)(-2-2)
B = (6+3)(-4)
B = 9x-4
B = -36
C=2(a-3b)+1.
C = 2(-2-3x3)+1
C = 2(-2-9)+1
C = 2x-11 + 1
C = -22+1
C = -21
D=2a-3b/a+b
D = 2x(-2) - 3x3/-2 + 3
D = -4+9/2 +3
D = 9/2-1
D = 9/2-2/2
D = 7/2
A= 6-6-2
A= -2
B= (2*3+3)(-2-2)
B= 9*(-4)
B= -36
C= 2(-2-3*3)+1
C= 2(-2-9)+1
C= 2*(-11)+1
C= -22+1
C= -21
D= 2*(-2)-3*3/-2+3
D= -4-9/1
D= -13