C1 - Quadratic equations on complex numbers, with real coefficients

Examples :   $3z^2-z+3=0$  ;   ${\left(z+2\right)}^2={\left(4z-1\right)}^2$

Automatic calculations without using the conjuguate.

C2 - Quadratic equations on complex numbers, with complex coefficients

Examples :   ${\left(-4ix+2\right)}^2+\left(-4ix+2\right)\left(x+2ix-1+i\right)=0$

Automatic calculations using the conjuguate.