Don't waste your time !!, No one of them is correct !!
Good app But why it xant solve 4x(squared)-4x+15
Great Awesome app helped on hw thanks :)
Awesome Saves soo much time
Up to you Generally good. It's free and it can work, however it has given me the wrong answer for a few equations. This has lead me to stop using this app as having to check the answer defeats the purpose of having the app
Removed WolframAlpha link due to a violation of TOS, sorry