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

$\,-3\,x +\,5\,y$ $\,5\,x +\,y$ $\,-3\,x \,-\,y$ $\,5\,x +\,5\,y$ $\,-3\,x +\,y$

$ \,9\,\,x^2 - ( \,6 + \,4\,\,x^2 + \,6\,x)=$ ?

$\,5\,\,x^2 \,-6\,x \,-6$ $\,13\,\,x^2 \,-6\,x \,-6$ $\,5\,\,x^2 +\,6\,x \,-6$ $\,5\,\,x^2 +\,6\,x +\,6$ $\,13\,\,x^2 +\,6\,x +\,6$

$\,x - ( - \,5\,\,x^2 - \,9 ) + \,2\,x=$ ?

$\,-5\,\,x^2 +\,3\,x \,-9$ $\,-5\,\,x^2 +\,3\,x +\,9$ $\,5\,\,x^2 \,-\,x +\,9$ $\,5\,\,x^2 +\,3\,x +\,9$ $\,5\,\,x^2 +\,3\,x \,-9$

$\,8\,x + (\,6 - \,x + \,7\,y) =$ ?

$\,9\,x +\,7\,y +\,6$ $\,9\,x \,-7\,y \,-6$ $\,7\,x \,-7\,y +\,6$ $\,7\,x +\,7\,y +\,6$ $\,-7\,x +\,7\,y \,-6$

$\,9 + ( - \,5\,x + \,8) - ( \,5 - \,2\,x) =$ ?

$\,-3\,x +\,12$ $\,-7\,x +\,12$ $\,-3\,x \,-4$ $\,-3\,x +\,22$

$ \,x - \,8\,\,x^2 - ( - \,9\,\,x^2 + \,7\,x )=$ ?

$\,\,x^2 \,-6\,x$ $\,17\,\,x^2 \,-6\,x$ $\,-17\,\,x^2 \,-6\,x$ $\,\,x^2 +\,8\,x$ $\,-17\,\,x^2 +\,8\,x$