1.

The roots z1,z2,z3 of the equation x3+3px2+3qx+r=0 (p,q,r are complex) correspond to points A, B and C. Then triangle ABC is equilateral if

Answer»

The roots z1,z2,z3 of the equation x3+3px2+3qx+r=0 (p,q,r are complex) correspond to points A, B and C. Then triangle ABC is equilateral if



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