Roots of a Cubic polynomial with complex coefficients computed using symbolic solutions

[size=85]Move the [u][b]complex[/b][/u] numbers a, b, c and d, which are the coefficients of a [b]cubic[/b] polynomial. The roots z1, z2, z3 (marked in red) are calculated directly in the GeoGebra window.[/size]
– Roman Chijner

Information: Roots of a Cubic polynomial with complex coefficients computed using symbolic solutions