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(1D) Perfect squares expansion

Expand and simplify.

$\left(8+3y\right)^{2}$
$\left(3-5y\right)^{2}$

$\left(6y-7x\right)^{2}$
$\left(-2x-3\right)^{2}$

$\left(-8y+5\right)^{2}$
$\left(-8x-3y\right)^{2}$

$\left(4x+5y\right)^{2}$
$\left(-8y+9\right)^{2}$

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