A = 2(x-1)+2(y+2)-2(1+z) B = 3x-(3-3y)+3(y+1) C = (x+y-1)+(x+y+1)-(x+y-z) D = 2(x-y)+3(y-x)+4(2y-x)+5x E = x(1-y)+y(1-z)+z(1-x)+xy+yz+xz F = x-[(1-y)-(z+1)] Mer
Mathématiques
maximebg
Question
A = 2(x-1)+2(y+2)-2(1+z)
B = 3x-(3-3y)+3(y+1)
C = (x+y-1)+(x+y+1)-(x+y-z)
D = 2(x-y)+3(y-x)+4(2y-x)+5x
E = x(1-y)+y(1-z)+z(1-x)+xy+yz+xz
F = x-[(1-y)-(z+1)]
Merci d'avance à ceux qui m'ont aidée.
B = 3x-(3-3y)+3(y+1)
C = (x+y-1)+(x+y+1)-(x+y-z)
D = 2(x-y)+3(y-x)+4(2y-x)+5x
E = x(1-y)+y(1-z)+z(1-x)+xy+yz+xz
F = x-[(1-y)-(z+1)]
Merci d'avance à ceux qui m'ont aidée.
1 Réponse
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1. Réponse fafa120501
il faut develope et reduire s sa ?
a = 2(x - 1) + 2(y + 2) - 2(1 + z)
a = 2x - 2 + 2y + 4 - 2 - 2z
a = 2x + 2y - 2z
b = 3x - (3 - 3y ) + 3(z + 1)
b= 3x - 3 + 3y + 3z + 3
b = 3x + 3y + 3z
c = (x + y -1) + (x + y + 1) - (x + y - z)
c = x + y - 1 + x + y + 1 - x - y + z
c = x + y + z
d = 2(x - y) + 3(y - z) + 4(z - x) + 3x
d = 2x - 2y + 3y - 3z + 4z - 4x + 3x
d = x + y + z
e = x(1 - y) + y(1 - z) + z(1 - x) + xy + yz +xz
e = x - xy + y - yz + z - xz + xy + yz + xz
e = x + y + z
f = (x + 2)(-x - 3) + 3x²
f = -x² - 3x - 2x - 6 + 3x²
f = 2x² - 5x - 6
jcoit s sa