$\,5\;(\,-8+\,8\,t) = $   ?

$\,-40 \,-8\,\,t$ $\,-40 +\,8\,t$ $\,-40 +\,13\,\,t$ $\,-40 +\,40\,\,t$ $\,-3 +\,13\,\,t$ $\,-40 \,-40\,\,t$

$\,6\;(\,3\,y\,-1) = $   ?

$\,18\,\,y \,-6$ $\,18\,\,y +\,6$ $\,18\,\,y +\,1$ $\,9\,\,y +\,5$ $\,18\,\,y +\,5$ $\,18\,\,y \,-1$

$(\,-\,t\,-8\,x)\,\times\,\,3 = $   ?

$\,-3\,\,t +\,8\,\,x$ $\,-3\,\,t \,-5\,x$ $\,-3\,\,t \,-24\,\,x$ $\,2\,\,t \,-5\,\,x$ $\,-3\,\,t \,-8\,x$ $\,-3\,\,t +\,24\,\,x$

$\,6\,t\;(\,2\,-\,t) = $   ?

$\,12\,\,t \,-\,t$ $\,12\,\,t +\,5\,t$ $\,12\,\,t +\,6\,t$ $\,12\,\,t \,-6\,\,t^2$ $\,-12 \,-6\,\,t^2$ $\,8\,\,t +\,5\,\,t^2$

$\,-4\,y\;(\,-3+\,4\,x) = $   ?

$\,-12 \,-16\,\,x\,y$ $\,12 $ $\,12\,\,y \,-16\,\,x\,y$ $\,12\,\,y +\,16\,x$ $\,-7\,\,y $ $\,12\,\,y +\,4\,x$

$\,-4\;(\,-2\,-4\,t) = $   ?

$\,8 \,-16\,\,t$ $\,8 +\,16\,\,t$ $\,-6 \,-8\,\,t$ $\,8 +\,4\,\,t$ $\,8 \,-4\,t$ $\,8 \,-8\,t$

$(\,-6\,b\,-6\,a)\,\times\,\,4\,b = $   ?

$\,24\,\,b^2 \,-2\,a$ $\,-24\,b \,-24\,\,a\,b$ $\,-24\,\,b^2 \,-24\,\,a\,b$ $\,-24\,\,b^2 \,-6\,a$ $\,-24\,\,b^2 +\,24\,a$ $\,-2\,\,b^2 \,-2\,\,a\,b$

$(\,5\,y+\,6\,x)\,\times\,\,6\,y = $   ?

$\,11\,\,y^2 +\,12\,\,x\,y$ $\,30\,\,y^2 \,-36\,x$ $\,-30\,\,y^2 +\,12\,\,x\,y$ $\,30\,\,y^2 +\,6\,x$ $\,30\,\,y^2 +\,36\,x$ $\,30\,\,y^2 +\,36\,\,x\,y$

$\,3\,y\;(\,9\,x+\,5) = $   ?

$\,27\,\,x\,y \,-15$ $\,27\,\,x\,y +\,15\,\,y$ $\,27\,\,x\,y +\,5$ $\,12\,\,x\,y +\,8\,\,y$ $\,27\,\,x\,y +\,8\,\,y$ $\,-27\,\,x\,y +\,15$

$(\,-8+\,9\,t)\,\times\,\,2\,t = $   ?

$\,-6\,\,t +\,11\,\,t^2$ $\,16\,\,t +\,11\,\,t^2$ $\,-16 +\,18\,\,t^2$ $\,-16\,\,t +\,9\,t$ $\,-16\,\,t +\,18\,\,t^2$ $\,-16\,\,t \,-18\,t$