What's is wrong with this php code

Question

The interpreter won't interpret my code for some syntax error in line 13 and I can't figure out what's the problem.

 <?php 
            extract($_GET) 
            for($i = 0; $i < key; $i++)
            {
                echo "<tr>";
                for($j = 0; $j < key; $j++)
                {
                    $result = $j * $i;
                    echo("<td>{$result}</td>"); 
                }
                echo("</tr>")
            } 
?>

Answer 1

echo("</tr>") not properly terminated.