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Exercice | Calculer les expressions suivantes.
.4 = 2x(12-2x(12-(12-2))) -12+2

Sagot :

4= 2x(12-2x(12-(12-2)))-12+2
=2x(12-2x(12-10))-12+2
=2x(12-2x2)-12+2
=2x(12-4)-12+2
=2x8-12+2
=16-12+2
=16-14
=2