Math easy way
When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are \[x = {-b \pm \sqrt{b^2-4ac} \over 2a}.\] I found that it is not difficult to write math in Web. \(a \ne 0\) and \(y = ax + b\) This is interesting that I can use equations here. I will write my text a lot. I am wondering also, I can add my code here. This should support it so that I can explain my code as well. I found that no need to add head here. If the header is not included, script can be used. Because I included script I can write mathematical formulation as well.