[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 580: sizeof(): Parameter must be an array or an object that implements Countable
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 636: sizeof(): Parameter must be an array or an object that implements Countable
•20290060050
Page 1 of 1

20290060050

Posted: Wed Mar 07, 2018 8:40 pm
by ada
$20x^2+13x-21=0$