Monday, May 4, 2020

testimg

https://www.quikly.com/dominos/s/vNaLeVJW?utm_content=blogger

Saturday, August 8, 2015

When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are $$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$