Question 186860
You did great to get the discriminant. The problem only asked is there were solutions; it did not ask what they were. So you went above and beyond. Nice work!

Here's a link you might find handy. http://collabvsl.wetpaint.com/page/Algebra+Solutions
Look at the quadratic section for links to info and a nifty online tool

*[invoke quadratic "x", 2^(1/2), -4, -7*2^(1/2)]