# What is the standard form of f(x)=(x-1)(-2x+3)-(2x-1)^2 ?

$f \left(x\right) = - 4 {x}^{2} + 9 x - 4$
$f \left(x\right) = \left(- 2 {x}^{2} + 2 x + 3 x - 3\right) - \left(2 {x}^{2} - 4 x + 1\right)$
$f \left(x\right) = - 4 {x}^{2} + 9 x - 4$