User talk:197.239.5.154

April 2021
Hello, I'm DVdm. Your recent edit(s) to the page Quadratic equation appear to have added incorrect information, so they have been removed for now. If you believe the information was correct, please cite a reliable source or discuss your change on the article's talk page. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thank you. - DVdm (talk) 18:55, 11 April 2021 (UTC)