$$4xSQURE-5x+3=0$$
$Q=\frac{3}{20SUxRe(x)}$
$xRe(x)\neq 0\text{ and }U\neq 0\text{ and }S\neq 0\text{ and }Re(x)\neq 0$
$S=\frac{3}{20QUxRe(x)}$
$xRe(x)\neq 0\text{ and }U\neq 0\text{ and }Q\neq 0\text{ and }Re(x)\neq 0$