Enter the inputs for ax^4+bx^3+cx^2+dx+e=0 where a b c d and e are the inputs. Click the cat to toggle variables. You can drag the cat. The outputs will be computed on the complex plane and in the variables. If you wish to find a quadratic, just leave a as 0. You can input any real number for all variables. When you input all 0s, it will say that U' (the universal set) are solutions and all points will be filled.
(CURRENTLY BEING UPDATED - [A] VARIABLE DOES NOT WORK) Thank you to https://scratch.mit.edu/discuss/topic/121146/?page=1 for showing me a method for finding nth roots. This is by far my best project and was very challenging but fun.