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Bonjour,
Exercice 1 :
A = (1/3)+(14/3)/(35/12) = (1/3)+(14/3)(12/35) = (1/3)+(168/105) = (35/105)+(168/105) = 203/35
B = ((1/2)+(4/3))/((1/3)-2) = ((3/6)+(8/6))/((1/3)-(6/3)) = (11/6)/(-5/3) = (11/6)(-3/5) = -33/30 = -11/10
C = ((1/5)+(5/8))((2/3)-2) = ((8/40)+(25/40))((2/3)-(6/3)) = (33/40)(-4/3) = -132/120 = 11/10
D = 4-3²*(-2)+3*(-2)³ = 4-9(-2)+3(-8) = 4+18-24 = -2
E = (4+3*5²)-2+3*5 = (4+3*25)-2+15 = 79+13 = 92
Exercice 2 :
4y-3y² = y(4-3y)
4y(-3y²) = -12y³
-5a*6a = -30a²
-5a+6a = a
3a+3b+3c = 3(a+b+c)
3a*3b*3c = 27abc
Exercice 1 :
A = (1/3)+(14/3)/(35/12) = (1/3)+(14/3)(12/35) = (1/3)+(168/105) = (35/105)+(168/105) = 203/35
B = ((1/2)+(4/3))/((1/3)-2) = ((3/6)+(8/6))/((1/3)-(6/3)) = (11/6)/(-5/3) = (11/6)(-3/5) = -33/30 = -11/10
C = ((1/5)+(5/8))((2/3)-2) = ((8/40)+(25/40))((2/3)-(6/3)) = (33/40)(-4/3) = -132/120 = 11/10
D = 4-3²*(-2)+3*(-2)³ = 4-9(-2)+3(-8) = 4+18-24 = -2
E = (4+3*5²)-2+3*5 = (4+3*25)-2+15 = 79+13 = 92
Exercice 2 :
4y-3y² = y(4-3y)
4y(-3y²) = -12y³
-5a*6a = -30a²
-5a+6a = a
3a+3b+3c = 3(a+b+c)
3a*3b*3c = 27abc
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