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

$\,-7\,\,x^2 +\,14\,x$ $\,5\,\,x^2 +\,2\,x$ $\,7\,\,x^2 +\,2\,x$ $\,-7\,\,x^2 +\,2\,x$ $\,5\,\,x^2 +\,14\,x$

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

$\,4\,x +\,9\,y +\,5$ $\,8\,x \,-9\,y \,-5$ $\,4\,x \,-9\,y +\,5$ $\,8\,x +\,9\,y +\,5$ $\,-4\,x +\,9\,y \,-5$

$\,7 + ( - \,3\,x + \,3) - ( \,2 - \,9\,x) =$ ?

$\,-12\,x +\,8$ $\,6\,x +\,12$ $\,7\,x +\,7$ $\,6\,x +\,8$ $\,6\,x +\,2$

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

$\,-3\,\,x^2 +\,x +\,8$ $\,7\,\,x^2 +\,x +\,8$ $\,-3\,\,x^2 \,-\,x \,-8$ $\,7\,\,x^2 \,-\,x \,-8$ $\,-3\,\,x^2 +\,x \,-8$

$ \,5\,x + \,8\,y - ( \,8\,x - \,3\,y)=$ ?

$\,13\,x +\,11\,y$ $\,-3\,x +\,11\,y$ $\,-3\,x +\,5\,y$ $\,13\,x +\,5\,y$ $\,-3\,x \,-5\,y$

$\,8\,x - ( - \,\,x^2 - \,4 ) + \,x=$ ?

$\,\,x^2 +\,7\,x +\,4$ $\,\,x^2 +\,9\,x +\,4$ $\,\,x^2 +\,9\,x \,-4$ $\,-\,\,x^2 +\,9\,x +\,4$ $\,-\,\,x^2 +\,9\,x \,-4$