$\,-4\,x +\,4 +\,2\,x =$ ?

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

$\,5 \,-3\times(\,-3\,x\,) \,-9 =$ ?

$\,-6\,x \,-4$ $\,9\,x +\,14$ $\,-9\,x \,-4$ $\,9\,x \,-4$ $\,-6\,x \,-9$

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

$\,-5\,x +\,8\,y \,-3$ $\,0\,x \,-8\,y \,-8$ $\,-13\,xy \,-3$ $\,-5\,x \,-8\,y +\,13$ $\,-5\,x \,-8\,y \,-3$

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

$\,-8\,y \,-4\,x +\,3\,xy$ $\,-9\,xy$ $\,29\,xy$ $\,35\,xy$ $\,-29\,xy$

$\,5\,x \,-1 +\,8\,x \,-3 \,-8\,x=$ ?

$\,5\,x \,-4$ $\,x$ $\,5\,x \,-2$ $\,7\,x$ $\,-11\,x \,-2$ $\,21\,x \,-4$

$\,-9\,x \,-4\,y +\,6\,y \,-3\,x=$ ?

$\,-6\,x \,-10\,y$ $\,-12\,x +\,10\,y$ $\,-13\,xy +\,3\,yx$ $\,-6\,x +\,2\,y$ $\,-12\,x +\,2\,y$

$\,-8\,x +\,4\,\,x^2 \,-4 +\,7\,\,x^2 +\,3=$ ?

$\,3\,\,x^2 \,-8\,x +\,7$ $\,11\,\,x^2 \,-8\,x \,-1$ $\,3\,\,x^2 \,-1$ $\,-3\,\,x^2 \,-8\,x \,-1$ $\,-\,\,x^2 \,-8\,x +\,11$

$\,6\times \,x \times \,7 + \,x \times \,9\,x =$ ?

$\,9\,\,x^2 \,-42\,x$ $\,-9\,\,x^2 +\,42\,x$ $\,9\,\,x^2 +\,42\,x$ $\,9\,\,x^2 +\,13\,x$ $\,51\,\,x^2$