rt.
Exercice 8:
Réduis les expressions littérales suivantes :
A = 2 x 4y =
B = 2y - 5y =
C = -3 x 2a =
D = -3a²-a2²
E = 8m x 0,5m
F = 5x + 2 - 9x =
G = 2y² - 2y + 4y²=
=
H = -6t+ 3 x 2t =
I = 6a-2b-8a +9b² =
J = 5x x 7 - 4 x 9x =
K = 7x² - 4x x 5x + x =
....
=
=
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