Warning: Declaration of EasySocialControllerMain::checkToken() should be compatible with Joomla\CMS\MVC\Controller\BaseController::checkToken($method = 'post', $redirect = true) in /home/calcool/domains/calcoolacademy.com/public_html/administrator/components/com_easysocial/includes/controller.php on line 89
lim 2+x-x^2ส่วน รูท 1- 4x-x^3 ทำยังไงครับ
x->-อินฟินิตี้