Expand and simplify.
$\left(5+8x\right)^{2}$
$\left(-8y+7x\right)^{2}$
$\left(-8x+7y\right)^{2}$
$\left(7y-3x\right)^{2}$
$\left(4-9y\right)^{2}$
$\left(-2x+3y\right)^{2}$
$\left(4y-5\right)^{2}$
$\left(-2-7x\right)^{2}$
$\left(2x+7\right)^{2}$
$\left(-3+5x\right)^{2}$