I have 3 unknowns: $\overline{P}_{11}$, $\overline{P}_{12}$, & $\overline{P}_{22}$
And 3 equations...
$\frac{1}{r}\overline{P}_{12}^2+2b\overline{P}_{12}-2=0$ $\frac{1}{r}\overline{P}_{12}\overline{P}_{22}+b\overline{P}_{22}+c\overline{P}_{12}-\overline{P}_{11}-3=0$ $\frac{1}{r}\overline{P}_{22}^2+2c\overline{P}_{22}-2\overline{P}_{12}-5=0$ where $b$, $c$ & $r$ are constants
How do I solve for this system of equations?