The roots of the equation $t^3+3at^2+3bt+c=0$ are $z_1, z_2, z_3$ which represent the vertices of an equilateral triangle, then?
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The roots of the equation $t^3+3at^2+3bt+c=0$ are $z_1, z_2, z_3$ which represent the vertices of an equilateral triangle, then?