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

$\,10\,\,x^2 \,-4\,x$ $\,-6\,\,x^2 \,-4\,x$ $\,-10\,\,x^2 \,-4\,x$ $\,-10\,\,x^2 +\,12\,x$ $\,-6\,\,x^2 +\,12\,x$

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

$\,16\,x +\,12\,y$ $\,2\,x \,-6\,y$ $\,2\,x +\,6\,y$ $\,2\,x +\,12\,y$ $\,16\,x +\,6\,y$

$\,6\,x - ( - \,7\,\,x^2 - \,6 ) + \,9\,x=$ ?

$\,-7\,\,x^2 +\,15\,x \,-6$ $\,7\,\,x^2 \,-3\,x +\,6$ $\,-7\,\,x^2 +\,15\,x +\,6$ $\,7\,\,x^2 +\,15\,x \,-6$ $\,7\,\,x^2 +\,15\,x +\,6$

$\,6\,x + (\,1 - \,x + \,8\,y) =$ ?

$\,7\,x +\,8\,y +\,1$ $\,5\,x +\,8\,y +\,1$ $\,5\,x \,-8\,y +\,1$ $\,-5\,x +\,8\,y \,-1$ $\,7\,x \,-8\,y \,-1$

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

$\,6\,x +\,19$ $\,-\,x +\,8$ $\,6\,x \,-3$ $\,-10\,x +\,1$ $\,6\,x +\,1$

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

$\,-4\,\,x^2 \,-6\,x \,-3$ $\,6\,\,x^2 +\,6\,x +\,3$ $\,-4\,\,x^2 +\,6\,x +\,3$ $\,-4\,\,x^2 +\,6\,x \,-3$ $\,6\,\,x^2 \,-6\,x \,-3$