$\,4\;(\,3+\,9\,x) = $   ?

$\,12 +\,13\,\,x$ $\,12 \,-9\,\,x$ $\,12 +\,9\,x$ $\,12 \,-36\,\,x$ $\,7 +\,13\,\,x$ $\,12 +\,36\,\,x$

$\,4\;(\,7\,-8\,x) = $   ?

$\,28 \,-32\,\,x$ $\,11 \,-4\,\,x$ $\,28 +\,32\,\,x$ $\,28 +\,8\,\,x$ $\,28 \,-8\,x$ $\,-28 \,-4\,x$

$(\,8\,b+\,3)\,\times\,\,4\,b = $   ?

$\,12\,\,b^2 +\,7\,\,b$ $\,-32\,\,b^2 +\,7\,\,b$ $\,32\,\,b^2 +\,12$ $\,32\,\,b^2 +\,12\,\,b$ $\,32\,\,b^2 +\,3$ $\,32\,\,b^2 \,-12$

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

$\,-40\,\,x^2 \,-20\,y$ $\,-40\,\,x^2 +\,4\,y$ $\,40\,\,x^2 +\,20\,y$ $\,-40\,\,x^2 +\,20\,\,x\,y$ $\,-40\,\,x^2 +\,9\,\,x\,y$ $\,-3\,\,x^2 +\,9\,\,x\,y$

$\,5\,t\;(\,-6+\,5\,t) = $   ?

$\,-\,\,t +\,10\,\,t^2$ $\,30\,\,t +\,25\,t$ $\,-30\,\,t +\,25\,\,t^2$ $\,-30\,\,t +\,5\,t$ $\,-30\,\,t \,-25\,t$ $\,-30\,\,t +\,10\,\,t^2$

$(\,-1\,-3\,b)\,\times\,(\,-2\,) = $   ?

$\,2 +\,3\,\,b$ $\,2 +\,6\,\,b$ $\,2 \,-3\,b$ $\,-3 \,-5\,\,b$ $\,2 \,-6\,\,b$ $\,2 \,-5\,b$

$\,6\,y\;(\,5\,y\,-6\,x) = $   ?

$\,11\,\,y^2 $ $\,30\,\,y^2 $ $\,30\,\,y^2 +\,36\,x$ $\,30\,\,y^2 \,-36\,\,x\,y$ $\,30\,\,y^2 \,-6\,x$ $\,-30\,y \,-36\,\,x\,y$

$\,6\,y\;(\,4+\,9\,x) = $   ?

$\,-24 +\,54\,\,x\,y$ $\,24\,\,y \,-54\,x$ $\,24\,\,y +\,54\,\,x\,y$ $\,24\,\,y +\,15\,\,x\,y$ $\,24\,\,y +\,9\,x$ $\,10\,\,y +\,15\,\,x\,y$

$(\,6+\,9\,a)\,\times\,(\,-6\,b\,) = $   ?

$\,-36\,\,b \,-54\,a$ $\,36 \,-3\,\,a\,b$ $\,-36\,\,b +\,9\,a$ $\,0\,\,b +\,3\,\,a\,b$ $\,-36\,\,b +\,54\,a$ $\,-36\,\,b \,-54\,\,a\,b$

$\,2\;(\,8\,t+\,8\,x) = $   ?

$\,16\,\,t \,-16\,\,x$ $\,16\,\,t \,-8\,\,x$ $\,-16\,\,t +\,10\,\,x$ $\,16\,\,t +\,16\,\,x$ $\,16\,\,t +\,8\,x$ $\,10\,\,t +\,10\,\,x$