main
Warning: Undefined array key "a" in C:\xampp\htdocs\book\php\x2_equation.php on line 9
Warning: Undefined array key "b" in C:\xampp\htdocs\book\php\x2_equation.php on line 10
Warning: Undefined array key "c" in C:\xampp\htdocs\book\php\x2_equation.php on line 11
Fatal error: Uncaught DivisionByZeroError: Division by zero in C:\xampp\htdocs\book\php\x2_equation.php:14
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\book\php\x2_equation.php on line 14