Find the derivative of the function.

$y=(x1{)}^2(x^{2}1{)}^{-3}$

$\frac{2(x1)(2x^{2}3x-1)}{(x^{2}1{)}^4}$

$\frac{2(x1)(2x^2-3x-1)}{(x^{2}1{)}^4}$

$\frac{-2(x1)(2x^2-3x-1)}{(x^{2}1{)}^4}$

$\frac{-2(x1)(2x^{2}3x-1)}{(x^{2}1{)}^4}$