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

$\,15\,x \,-5\,y$ $\,-3\,x +\,5\,y$ $\,-3\,x \,-5\,y$ $\,-3\,x +\,13\,y$ $\,15\,x +\,13\,y$

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

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

$ \,\,x^2 - ( \,5 + \,9\,\,x^2 + \,7\,x)=$ ?

$\,-8\,\,x^2 \,-7\,x \,-5$ $\,10\,\,x^2 +\,7\,x +\,5$ $\,-8\,\,x^2 +\,7\,x +\,5$ $\,10\,\,x^2 \,-7\,x \,-5$ $\,-8\,\,x^2 +\,7\,x \,-5$

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

$\,2\,\,x^2 +\,x +\,5$ $\,2\,\,x^2 +\,11\,x \,-5$ $\,-2\,\,x^2 +\,11\,x \,-5$ $\,-2\,\,x^2 +\,11\,x +\,5$ $\,2\,\,x^2 +\,11\,x +\,5$

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

$\,5\,\,x^2 +\,6\,x$ $\,-\,\,x^2 +\,8\,x$ $\,-5\,\,x^2 +\,8\,x$ $\,-5\,\,x^2 +\,6\,x$ $\,-\,\,x^2 +\,6\,x$

$\,6 + ( - \,4\,x + \,1) - ( \,2 - \,7\,x) =$ ?

$\,-11\,x +\,5$ $\,3\,x +\,9$ $\,3\,x +\,3$ $\,3\,x +\,5$ $\,2\,x +\,6$