1) Dévlopper (a+b+c)(ab+bc+ca)
2) devlopper [tex](a+b+c)^{2}[/tex] et [tex](a+b+c)^{3}[/tex]
3) on suppose a+b+c = 0 et abc=1
calculer [tex]a^{3} +b^{3} +c^{3}[/tex]
2) devlopper [tex](a+b+c)^{2}[/tex] et [tex](a+b+c)^{3}[/tex]
3) on suppose a+b+c = 0 et abc=1
calculer [tex]a^{3} +b^{3} +c^{3}[/tex]
More Questions From This User See All