Résoudre dans ℝ les équations suivantes :
x3 - x2 = 0.
S = {0; 1; -1}.
S = {-1; 0; -i}.
S = {-1; 1; 2}.
S = {0; 1; i}.
x3 + 6x2 + 12x + 8 = 0.
S = {2}.
S = {-2}.
S = {-1; 1; -2}.
x3 + 3/2 x2 + 3/4 x + 1/8 = 0.
S={-1; 1; -1/2}.
S={-1; 1; 1/2}.
S={-1/2}.
S={1/2}.
x3 - x2 + 1/3 x - 1/27 = 0.
S={-1/3}.
S={-1; 1; 1/3}.
S={-1; 1; -1/3}.
S={1/3}.
3x3 + x2 - 5x + 2 = 0.
S = {-2/3; -1-√21 /2 ; -1+√21 /2}.
S = {2/3; -1-√21 /2; -1+√21 /2}.
S = {2/3; -1-√5 /2 ; -1+√5 /2}.
S = {2; -1-√5 /2; -1+√5 /2}.