What is the standard form of  y= (2x-3)(2x+4)+(4x-3)^2?

$y = 20 {x}^{2} - 22 x - 3$
$y = \left(2 x - 3\right) \left(2 x + 4\right) + {\left(4 x - 3\right)}^{2}$
$y = 4 {x}^{2} + 8 x - 6 x - 12 + 16 {x}^{2} - 24 x + 9$
$y = 20 {x}^{2} - 22 x - 3$