$\,4\,x \,-7\,\,x^2 \,-6 +\,2\,\,x^2 +\,3=$ ?

$\,-\,\,x^2 \,-3$ $\,-5\,\,x^2 +\,4\,x \,-3$ $\,-9\,\,x^2 +\,4\,x \,-3$ $\,-3\,\,x^2 +\,4\,x \,-5$ $\,9\,\,x^2 +\,4\,x +\,9$

$\,-5\,x +\,5 \,-6\,x \,-2 \,-5\,x=$ ?

$\,-16\,x +\,3$ $\,-6\,x +\,3$ $\,-9\,x$ $\,-13\,x$ $\,-16\,x \,-7$ $\,-4\,x \,-7$

$\,y \times \,6\,x \,-3\,xy =$ ?

$\,3\,xy$ $\,4\,xy$ $\,9\,xy$ $\,y +\,6\,x \,-3\,xy$ $\,-9\,xy$

$\,x \,-5\,y \,-8\,y +\,6\,x=$ ?

$\,-5\,x \,-13\,y$ $\,7\,x \,-13\,y$ $\,-4\,xy \,-2\,yx$ $\,-5\,x +\,3\,y$ $\,7\,x \,-3\,y$

$\,7\,x \,-6 +\,x =$ ?

$\,6\,x \,-6$ $\,-6\,x \,-6$ $\,2\,x$ $\,7\,x \,-5\,x$ $\,8\,x \,-6$

$\,-5\times \,x \times \,9 + \,x \times \,6\,x =$ ?

$\,6\,\,x^2 \,-45\,x$ $\,6\,\,x^2 +\,45\,x$ $\,-39\,\,x^2$ $\,6\,\,x^2 +\,4\,x$ $\,-6\,\,x^2 \,-45\,x$

$\,-4 +\,6\times(\,-2\,x\,) +\,3 =$ ?

$\,-12\,x \,-7$ $\,-12\,x \,-1$ $\,4\,x \,-1$ $\,-4\,x +\,3$ $\,12\,x \,-1$

$\,8 +\,5\,x \,-7\,y +\,7\,x +\,4=$ ?

$\,12\,x \,-7\,y +\,4$ $\,20\,x \,-7\,y +\,4$ $\,12\,x \,-7\,y +\,12$ $\,-2\,x \,-7\,y +\,12$ $\,5\,xy +\,12$