[size=85]Using this applet by setting the coefficients of a [i][b]polynomial of the 5th degree[/b][/i], you can [u]calculate[/u] its [b]roots[/b], [b]extrema[/b] and [b]Points[/b] of [b]Inflection[/b] . All calculations are carried out using symbolic formulas. The coefficient [b][color=#e69138]a₀[/color][/b] can also be set by moving this point along the y-axis.[br][/size] [size=85]Previous applets: [url=https://www.geogebra.org/m/tfxxakkm]1[/url] and [url=https://www.geogebra.org/m/mhxk9tbc]2[/url].[/size]