$$x= \frac{-b ±\sqrt][b^2-4ac]}{2a}$$
x= \frac{-b ±\sqrt][b^2-4ac]}{2a}
It was hard but this is all i could've done.
I used this sign ± but some Á appeared...
And as for the two brackets after the sqrt.
This is what it looks like when take one out
$$x= \frac{-b ±\sqrt[b^2-4ac]}{2a}$$
.