$$A=(x-2)(3-5)+9 { x }^{ 2 } -25$$
$A=9x^{2}-2x-21$
$x=\frac{\sqrt{9A+190}+1}{9}$
$x=\frac{-\sqrt{9A+190}+1}{9}$
$x=\frac{\sqrt{9A+190}+1}{9}$
$x=\frac{-\sqrt{9A+190}+1}{9}\text{, }A\geq -\frac{190}{9}$
