$\,9\,x - ( - \,6\,\,x^2 - \,5 ) + \,3\,x=$ ?

$\,-6\,\,x^2 +\,12\,x +\,5$ $\,6\,\,x^2 +\,12\,x \,-5$ $\,6\,\,x^2 +\,12\,x +\,5$ $\,6\,\,x^2 +\,6\,x +\,5$ $\,-6\,\,x^2 +\,12\,x \,-5$

$\,2 + ( - \,9\,x + \,7) - ( \,4 - \,4\,x) =$ ?

$\,-13\,x +\,5$ $\,-5\,x +\,13$ $\,-2\,x +\,2$ $\,-5\,x +\,5$ $\,-5\,x \,-9$

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

$\,-7\,x \,-\,y$ $\,9\,x +\,y$ $\,9\,x +\,17\,y$ $\,-7\,x +\,17\,y$ $\,-7\,x +\,y$

$\,5\,x + (\,5 - \,4\,x + \,y) =$ ?

$\,x +\,y +\,5$ $\,x \,-\,y +\,5$ $\,9\,x \,-\,y \,-5$ $\,9\,x +\,y +\,5$ $\,-\,x +\,y \,-5$

$ \,7\,\,x^2 - ( \,3 + \,5\,\,x^2 + \,8\,x)=$ ?

$\,2\,\,x^2 +\,8\,x +\,3$ $\,12\,\,x^2 \,-8\,x \,-3$ $\,12\,\,x^2 +\,8\,x +\,3$ $\,2\,\,x^2 \,-8\,x \,-3$ $\,2\,\,x^2 +\,8\,x \,-3$

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

$\,-3\,\,x^2 +\,x$ $\,-9\,\,x^2 +\,7\,x$ $\,-3\,\,x^2 +\,7\,x$ $\,-9\,\,x^2 +\,x$ $\,9\,\,x^2 +\,x$