Exercice 1 : Écrire les expressions suivantes en supprimant les symboles « x » inutiles :
a) axb-2,5 x 2 = .....
d) 5 x x - yx 3 =
b) 4 x (x + 3) =
e) (m + n) x 3 = ...
c) 3 x x x 4xy=...
f) 2x x x x = .....
g) 3 x 2,5 = ..
h) x + 2xy + 3x z=.....
j) nx 5 =
i) x x 3 x 2=...
Merci beaucoup ❤️ quelqu’un peut maider
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