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Expand and simplify.

$\left(-3-4y\right)^{2}$

$\left(-2-9y\right)^{2}$

$\left(3+2x\right)^{2}$

$\left(-2y+9x\right)^{2}$

$\left(-4x+9\right)^{2}$

$\left(8x+5\right)^{2}$

$\left(-4y+3\right)^{2}$

$\left(3x+5\right)^{2}$

$\left(-9y-2\right)^{2}$

$\left(9x-7\right)^{2}$