$ \,x + \,4\,y - ( \,8\,x - \,3\,y)=$ ?

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

$ \,2\,\,x^2 - ( \,4 + \,3\,\,x^2 + \,7\,x)=$ ?

$\,-\,\,x^2 \,-7\,x \,-4$ $\,5\,\,x^2 \,-7\,x \,-4$ $\,5\,\,x^2 +\,7\,x +\,4$ $\,-\,\,x^2 +\,7\,x \,-4$ $\,-\,\,x^2 +\,7\,x +\,4$

$\,4 + ( - \,4\,x + \,5) - ( \,8 - \,x) =$ ?

$\,-6\,x +\,4$ $\,-3\,x +\,1$ $\,-3\,x \,-9$ $\,-3\,x +\,17$ $\,-5\,x +\,1$

$\,9\,x + (\,1 - \,8\,x + \,5\,y) =$ ?

$\,x +\,5\,y +\,1$ $\,17\,x \,-5\,y \,-1$ $\,-\,x +\,5\,y \,-1$ $\,17\,x +\,5\,y +\,1$ $\,x \,-5\,y +\,1$

$ \,4\,x - \,3\,\,x^2 - ( - \,2\,\,x^2 + \,9\,x )=$ ?

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

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

$\,6\,\,x^2 \,-8\,x +\,3$ $\,-6\,\,x^2 +\,10\,x +\,3$ $\,-6\,\,x^2 +\,10\,x \,-3$ $\,6\,\,x^2 +\,10\,x \,-3$ $\,6\,\,x^2 +\,10\,x +\,3$