$\,9 + ( - \,6\,x + \,4) - ( \,4 - \,4\,x) =$ ?

$\,-2\,x +\,17$ $\,-10\,x +\,9$ $\,-2\,x +\,1$ $\,-2\,x +\,9$

$ \,8\,x - \,\,x^2 - ( - \,3\,\,x^2 + \,6\,x )=$ ?

$\,-4\,\,x^2 +\,2\,x$ $\,2\,\,x^2 +\,2\,x$ $\,2\,\,x^2 +\,14\,x$ $\,4\,\,x^2 +\,2\,x$ $\,-4\,\,x^2 +\,14\,x$

$ \,9\,x + \,8\,y - ( \,4\,x - \,9\,y)=$ ?

$\,5\,x +\,y$ $\,13\,x +\,17\,y$ $\,5\,x +\,17\,y$ $\,5\,x \,-\,y$ $\,13\,x \,-\,y$

$\,4\,x - ( - \,6\,\,x^2 - \,2 ) + \,3\,x=$ ?

$\,6\,\,x^2 +\,x +\,2$ $\,-6\,\,x^2 +\,7\,x +\,2$ $\,6\,\,x^2 +\,7\,x \,-2$ $\,-6\,\,x^2 +\,7\,x \,-2$ $\,6\,\,x^2 +\,7\,x +\,2$

$ \,9\,\,x^2 - ( \,2 + \,3\,\,x^2 + \,9\,x)=$ ?

$\,6\,\,x^2 \,-9\,x \,-2$ $\,12\,\,x^2 +\,9\,x +\,2$ $\,12\,\,x^2 \,-9\,x \,-2$ $\,6\,\,x^2 +\,9\,x \,-2$ $\,6\,\,x^2 +\,9\,x +\,2$

$\,9\,x + (\,6 - \,3\,x + \,y) =$ ?

$\,12\,x +\,y +\,6$ $\,6\,x \,-\,y +\,6$ $\,6\,x +\,y +\,6$ $\,-6\,x +\,y \,-6$ $\,12\,x \,-\,y \,-6$