The variables $a$, $b$, and $c$ may occur in quadratic equations in different ways than they are used in the quadratic formula. This problem illustrates the translation from formula to problem, that may be necessary.
There are two solutions of the equation $$bx^2 -cx + a^2 = 0$$ (where $a$, $b$, and $c$ are constants, and $x$ is the unknown). They differ by the sign of the square root. Enter the one with the plus sign here .