Expand and simplify.
$\left(-3y+8x\right)^{2}$
$\left(-3x-5y\right)^{2}$
$\left(7x+2\right)^{2}$
$\left(-2y-7x\right)^{2}$
$\left(-2x+9\right)^{2}$
$\left(-5x+9\right)^{2}$
$\left(-5y-8x\right)^{2}$
$\left(-3x+7\right)^{2}$
$\left(-5y+8x\right)^{2}$
$\left(-8-5x\right)^{2}$