Here's the question you clicked on:
AshhSmith
How many and of what type are the solutions of a quadratic equation when the value of the radicand is 0?
\[ax^2+bx+c=0\] \[x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\] \[x=\frac{-b\pm0}{2a}\]
Two identical rational solutions ?
you can say two identical solutions , or one solution , they mean the same
and yeah rational because the sqrt has gone already