$\,4\,x - ( - \,5\,\,x^2 - \,5 ) + \,6\,x=$ ?

$\,5\,\,x^2 +\,10\,x +\,5$ $\,5\,\,x^2 +\,10\,x \,-5$ $\,-5\,\,x^2 +\,10\,x +\,5$ $\,-5\,\,x^2 +\,10\,x \,-5$ $\,5\,\,x^2 \,-2\,x +\,5$

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

$\,-3\,x \,-1$ $\,-3\,x +\,17$ $\,-3\,x +\,15$ $\,4\,x +\,8$ $\,-13\,x +\,15$

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

$\,-4\,x +\,7\,y \,-4$ $\,4\,x +\,7\,y +\,4$ $\,4\,x \,-7\,y +\,4$ $\,12\,x +\,7\,y +\,4$ $\,12\,x \,-7\,y \,-4$

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

$\,-6\,\,x^2 \,-3\,x$ $\,-8\,\,x^2 +\,5\,x$ $\,-6\,\,x^2 +\,5\,x$ $\,8\,\,x^2 \,-3\,x$ $\,-8\,\,x^2 \,-3\,x$

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

$\,8\,\,x^2 +\,x +\,5$ $\,-4\,\,x^2 +\,x \,-5$ $\,8\,\,x^2 \,-\,x \,-5$ $\,-4\,\,x^2 +\,x +\,5$ $\,-4\,\,x^2 \,-\,x \,-5$

$ \,3\,x + \,4\,y - ( \,5\,x - \,8\,y)=$ ?

$\,8\,x \,-4\,y$ $\,-2\,x +\,4\,y$ $\,8\,x +\,12\,y$ $\,-2\,x +\,12\,y$ $\,-2\,x \,-4\,y$