Made this while working on another project. It can solve quadratic, cubic, and quartic equations. The roots are shown as blue lines (where the graph intersects the x-axis) Pro tip: Don't google the quartic formula. just don't. please.
Thank you, Ludovico Ferrari. If you find any bugs then please let me know. Check out this website if you want more of this stuff: www.geogebra.org/classic? Yes, I know this is very boring.