$\,2\;(\,-\,b+\,2) = $   ?

$\,\,b +\,4$ $\,-2\,\,b +\,2$ $\,-2\,\,b +\,4$ $\,-2\,\,b \,-2$ $\,-2\,\,b \,-4$

$(\,1\,-2\,t)\,\times\,\,2 = $   ?

$\,2 \,-4\,\,t$ $\,2 +\,2\,\,t$ $\,-2 $ $\,2 \,-2\,t$ $\,3 $ $\,2 +\,4\,\,t$

$\,3\,t\;(\,t+\,3\,x) = $   ?

$\,3\,t +\,9\,\,t\,x$ $\,3\,\,t^2 \,-9\,x$ $\,-3\,\,t^2 +\,6\,\,t\,x$ $\,3\,\,t^2 +\,9\,\,t\,x$ $\,4\,\,t^2 +\,6\,\,t\,x$ $\,3\,\,t^2 +\,3\,x$

$\,3\,x\;(\,-\,x+\,1) = $   ?

$\,2\,\,x^2 +\,4\,\,x$ $\,-3\,\,x^2 +\,1$ $\,-3\,\,x^2 \,-3$ $\,3\,\,x^2 +\,4\,\,x$ $\,-3\,\,x^2 +\,3\,\,x$ $\,-3\,\,x^2 +\,3$

$\,-3\;(\,-2\,t\,-8) = $   ?

$\,6\,\,t \,-24$ $\,-5\,\,t \,-11$ $\,-6\,\,t \,-11$ $\,6\,\,t +\,8$ $\,6\,\,t \,-8$ $\,6\,\,t +\,24$

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

$\,-12\,\,t +\,24\,\,t\,x$ $\,-12\,\,t +\,24\,x$ $\,\,t +\,10\,\,t\,x$ $\,-12\,\,t \,-24\,x$ $\,12\,\,t +\,10\,\,t\,x$ $\,-12\,\,t +\,6\,x$

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

$\,-\,\,x^2 +\,8\,\,x$ $\,-42\,\,x^2 +\,12\,\,x$ $\,-42\,\,x^2 +\,8\,\,x$ $\,-42\,\,x^2 \,-12$ $\,42\,x +\,12\,\,x$ $\,-42\,\,x^2 +\,2$

$(\,4\,a+\,8\,b)\,\times\,\,2 = $   ?

$\,8\,\,a +\,8\,b$ $\,8\,\,a \,-16\,\,b$ $\,8\,\,a \,-8\,\,b$ $\,6\,\,a +\,10\,\,b$ $\,-8\,\,a +\,10\,\,b$ $\,8\,\,a +\,16\,\,b$

$\,-2\,x\;(\,y\,-5) = $   ?

$\,-\,\,x\,y \,-7\,\,x$ $\,-2\,\,x\,y \,-5$ $\,-2\,\,x\,y +\,10\,\,x$ $\,-2\,\,x\,y \,-10$ $\,-2\,\,x\,y +\,10$ $\,2\,\,x\,y \,-7$

$\,4\,a\;(\,4\,a+\,6\,b) = $   ?

$\,8\,\,a^2 +\,10\,\,a\,b$ $\,-16\,\,a^2 +\,10\,\,a\,b$ $\,16\,\,a^2 +\,6\,b$ $\,16\,\,a^2 +\,24\,\,a\,b$ $\,16\,\,a^2 +\,24\,b$ $\,16\,\,a^2 \,-24\,b$