Exercice 1 1 ) Calculer 4 + 7x+ 2x pour x = 3 puis pour x = -3.
Dart
2°) Développer et réduire : A-10 - (x + 3) + (-3x + 6)
B=2(5 + 2x) - (-7- 7x)
C=(x - 1)(2x + 5)
D=(-3 - 2x)(6 - 3x)
Merci
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