$(\,7+\,3\,a)\,\times\,\,6 = $   ?

$\,42 \,-18\,\,a$ $\,13 +\,9\,\,a$ $\,-42 +\,9\,\,a$ $\,42 \,-3\,\,a$ $\,42 +\,18\,\,a$ $\,42 +\,3\,a$

$(\,8\,t\,-1)\,\times\,\,4 = $   ?

$\,32\,\,t +\,4$ $\,12\,\,t +\,3$ $\,32\,\,t +\,3$ $\,32\,\,t \,-1$ $\,32\,\,t +\,1$ $\,32\,\,t \,-4$

$\,3\;(\,-9\,y+\,x) = $   ?

$\,-27\,\,y +\,x$ $\,-6\,\,y +\,4\,\,x$ $\,-27\,\,y \,-\,\,x$ $\,-27\,\,y +\,3\,\,x$ $\,-27\,\,y \,-3\,\,x$ $\,27\,\,y +\,4\,\,x$

$\,3\,t\;(\,-2+\,2\,x) = $   ?

$\,-6\,\,t \,-6\,x$ $\,-6\,\,t +\,2\,x$ $\,\,t +\,5\,\,t\,x$ $\,6 +\,6\,\,t\,x$ $\,-6\,\,t +\,6\,\,t\,x$ $\,-6\,\,t +\,5\,\,t\,x$

$\,-5\;(\,-8\,-7\,t) = $   ?

$\,-13 \,-12\,\,t$ $\,40 \,-7\,t$ $\,40 +\,7\,\,t$ $\,40 \,-12\,t$ $\,40 \,-35\,\,t$ $\,40 +\,35\,\,t$

$\,5\,y\;(\,9\,y\,-8) = $   ?

$\,45\,\,y^2 \,-40\,\,y$ $\,14\,\,y^2 \,-3\,\,y$ $\,45\,\,y^2 +\,40$ $\,45\,\,y^2 \,-40$ $\,45\,\,y^2 \,-8$ $\,-45\,\,y^2 \,-3$

$\,3\,b\;(\,-\,b+\,5\,a) = $   ?

$\,-3\,\,b^2 +\,5\,a$ $\,-3\,\,b^2 +\,15\,\,a\,b$ $\,3\,\,b^2 +\,15\,a$ $\,-3\,\,b^2 \,-15\,a$ $\,-3\,\,b^2 +\,8\,\,a\,b$ $\,2\,\,b^2 +\,8\,\,a\,b$

$\,3\,y\;(\,-6\,y+\,8\,x) = $   ?

$\,-18\,\,y^2 \,-24\,x$ $\,-18\,\,y^2 +\,8\,x$ $\,-18\,\,y^2 +\,24\,\,x\,y$ $\,18\,\,y^2 +\,11\,\,x\,y$ $\,-18\,\,y^2 +\,24\,x$ $\,-3\,\,y^2 +\,11\,\,x\,y$

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

$\,-16\,\,t +\,12\,x$ $\,16\,\,t \,-7\,x$ $\,-16\,\,t +\,12\,\,t\,x$ $\,-16\,\,t \,-12\,x$ $\,0\,\,t \,-7\,\,t\,x$ $\,-16\,\,t \,-3\,x$

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

$\,-\,\,t^2 +\,9\,\,t$ $\,-12\,\,t^2 +\,6$ $\,-12\,\,t^2 +\,18\,\,t$ $\,-12\,\,t^2 \,-18$ $\,12\,\,t^2 +\,9\,\,t$ $\,-12\,t +\,18\,\,t$