$ \,9\,x - \,\,x^2 - ( - \,8\,\,x^2 + \,5\,x )=$ ?

$\,-9\,\,x^2 +\,4\,x$ $\,7\,\,x^2 +\,14\,x$ $\,7\,\,x^2 +\,4\,x$ $\,-9\,\,x^2 +\,14\,x$ $\,9\,\,x^2 +\,4\,x$

$\,x - ( - \,4\,\,x^2 - \,2 ) + \,5\,x=$ ?

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

$ \,6\,x + \,3\,y - ( \,8\,x - \,5\,y)=$ ?

$\,14\,x +\,8\,y$ $\,14\,x \,-2\,y$ $\,-2\,x \,-2\,y$ $\,-2\,x +\,2\,y$ $\,-2\,x +\,8\,y$

$ \,7\,\,x^2 - ( \,1 + \,4\,\,x^2 + \,5\,x)=$ ?

$\,11\,\,x^2 +\,5\,x +\,1$ $\,3\,\,x^2 +\,5\,x +\,1$ $\,3\,\,x^2 \,-5\,x \,-1$ $\,3\,\,x^2 +\,5\,x \,-1$ $\,11\,\,x^2 \,-5\,x \,-1$

$\,8\,x + (\,1 - \,3\,x + \,2\,y) =$ ?

$\,11\,x \,-2\,y \,-1$ $\,5\,x \,-2\,y +\,1$ $\,5\,x +\,2\,y +\,1$ $\,-5\,x +\,2\,y \,-1$ $\,11\,x +\,2\,y +\,1$

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

$\,-7\,x +\,3$ $\,-5\,x \,-9$ $\,-5\,x +\,3$ $\,-5\,x +\,15$