Minitest N03 −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−→
Nom : Pr´enom : Montrer que z−z est un imaginaire pur :
Quelle est la partie r´eelle de (4 + 3i)2?
Ecrire sous forme alg´ebrique le r´esultat de (1´ −i)×(2 + 3i) =
R´esoudre l’´equation z2−9 = 0
R´esoudre l’´equation z2+ 4z+ 13 = 0
1
Minitest N03 −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−→
Nom : Pr´enom : Montrer que z+z est un r´eel :
Quelle est la partie imaginaire de (4 + 3i)2?
Ecrire sous forme alg´ebrique le r´esultat de (1 +´ i)×(2−3i) =
R´esoudre l’´equation z2−4 = 0
R´esoudre l’´equation z2+ 6z+ 13 = 0
2