$\,6\;(\,-4\,y+\,9) = $   ?

$\,2\,\,y +\,15$ $\,-24\,\,y \,-9$ $\,-24\,\,y +\,54$ $\,-24\,\,y +\,15$ $\,-24\,\,y \,-54$ $\,-24\,\,y +\,9$

$\,3\;(\,-5\,t\,-4) = $   ?

$\,-15\,\,t \,-12$ $\,-15\,\,t \,-4$ $\,-2\,\,t \,-1$ $\,15\,\,t \,-1$ $\,-15\,\,t +\,12$ $\,-15\,\,t +\,4$

$\,4\,a\;(\,-7\,a+\,6) = $   ?

$\,-28\,\,a^2 \,-24$ $\,-28\,\,a^2 +\,24\,\,a$ $\,-3\,\,a^2 +\,10\,\,a$ $\,28\,\,a^2 +\,10\,\,a$ $\,-28\,\,a^2 +\,6$ $\,-28\,\,a^2 +\,24$

$\,-3\,x\;(\,2\,y\,-8) = $   ?

$\,-6\,\,x\,y \,-11$ $\,6\,\,x\,y +\,24$ $\,-6\,\,x\,y \,-8$ $\,-6\,\,x\,y \,-24$ $\,-6\,\,x\,y +\,24\,\,x$ $\,-\,\,x\,y \,-11\,\,x$

$(\,-8+\,7\,t)\,\times\,\,4\,t = $   ?

$\,-32\,\,t +\,28\,\,t^2$ $\,32 +\,28\,\,t^2$ $\,-32\,\,t \,-28\,t$ $\,-4\,\,t +\,11\,\,t^2$ $\,-32\,\,t +\,11\,\,t^2$ $\,-32\,\,t +\,7\,t$

$\,3\,b\;(\,-3+\,2\,a) = $   ?

$\,9 +\,6\,\,a\,b$ $\,-9\,\,b +\,6\,\,a\,b$ $\,0\,\,b +\,5\,\,a\,b$ $\,-9\,\,b +\,5\,\,a\,b$ $\,-9\,\,b +\,2\,a$ $\,-9\,\,b \,-6\,a$

$(\,2\,b\,-5\,a)\,\times\,\,6 = $   ?

$\,12\,\,b \,-5\,a$ $\,12\,\,b +\,30\,\,a$ $\,12\,\,b \,-30\,\,a$ $\,8\,\,b +\,\,a$ $\,-12\,\,b +\,a$ $\,12\,\,b +\,5\,\,a$

$\,5\,b\;(\,-2\,b+\,8\,a) = $   ?

$\,-10\,\,b^2 \,-40\,a$ $\,-10\,\,b^2 +\,8\,a$ $\,-10\,\,b^2 +\,40\,a$ $\,10\,\,b^2 +\,13\,\,a\,b$ $\,-10\,\,b^2 +\,40\,\,a\,b$ $\,3\,\,b^2 +\,13\,\,a\,b$

$(\,2\,b\,-6)\,\times\,(\,-3\,) = $   ?

$\,6\,\,b \,-9$ $\,-6\,\,b \,-18$ $\,-6\,\,b +\,18$ $\,-\,\,b \,-9$ $\,-6\,\,b +\,6$ $\,-6\,\,b \,-6$

$(\,5\,y\,-9\,x)\,\times\,\,5\,y = $   ?

$\,-25\,\,y^2 \,-45\,x$ $\,25\,\,y^2 \,-4\,x$ $\,25\,\,y^2 +\,45\,x$ $\,25\,\,y^2 \,-45\,\,x\,y$ $\,25\,\,y^2 \,-9\,x$ $\,10\,\,y^2 \,-4\,\,x\,y$