Quadratic Equation

Why didn't I have one of these during high school math? Just enter the coefficients for the 'Ax^2 + Bx + C = 0' equation and JavaScript will output the solutions (if they are not imaginary!). Neat!

JavaScript Source Code 3000: Calculator: Quadratic Equation Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">    <! > <! >   </SCRIPT> </head>    <BODY>  <center> <form name=form> <table border=1 cellpadding=2> <tr> <td colspan=2 align=center><b>Quadratic Equation:<br>Ax<sup>2</sup> + Bx + C = 0</b></td> </tr> <tr> <td> <center><table border=1 width=100% cellpadding=2> <tr> <td align=center><b>A = </b></td> <td align=center><input type=text size=6 name="a"></td> </tr> <tr> <td align=center><b>B = </b></td> <td align=center><input type=text size=6 name="b"></td> </tr> <tr> <td align=center><b>C = </b></td> <td align=center><input type=text size=6 name="c"></td> </tr> </table> </td> <td> <center><table border=1 width=100% cellpadding=2> <tr> <td colspan=2 align=center> <input type=button value="Solve" onClick="quad(this.form)"></td> </tr> <tr> <td align=center><b>X1 = </b></td> <td align=center><input type=text size=6 name="x1"></td> </tr> <tr> <td align=center><b>X2 = </b></td> <td align=center><input type=text size=6 name="x2"></td> </tr> </table> </td> </tr> </table> </form> </center>

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