User talk:Mathvault
March 2016[edit]
Hello, I'm DVdm. I wanted to let you know that I removed an external link you added to the page Quadratic equation because it seemed inappropriate for an encyclopedia. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page or take a look at our guidelines about links. Thanks. DVdm (talk) 18:39, 30 March 2016 (UTC)