HOMEWORK $12$: Quadratic Formula

Write a function that calculates the real roots of a function using the quadratic formula and returns both answers to the spreadsheet.

$a{x}^2+bx+c=0,x=\frac{-b+-\sqrt[\phantom{2}]{b^2-4ac}}{2a}$

But, we have som weird cases we need to consider. If $a$ is zero, it is the equation of a line. If a and $b$ equal to zero, then the solution must be that $c=0.$

If