$(\,6\,a+\,7)\,\times\,\,4 = $   ?

$\,24\,\,a +\,7$ $\,10\,\,a +\,11$ $\,24\,\,a \,-7$ $\,24\,\,a \,-28$ $\,24\,\,a +\,28$ $\,24\,\,a +\,11$

$\,6\;(\,-3\,-5\,b) = $   ?

$\,-18 +\,5\,\,b$ $\,-18 \,-30\,\,b$ $\,-18 +\,30\,\,b$ $\,-18 \,-5\,b$ $\,3 +\,\,b$ $\,-18 +\,b$

$(\,7\,b+\,6)\,\times\,(\,-5\,a\,) = $   ?

$\,-35\,\,a\,b +\,6$ $\,2\,\,a\,b +\,\,a$ $\,-35\,\,a\,b \,-30\,\,a$ $\,-35\,b \,-\,\,a$ $\,-35\,\,a\,b +\,30$ $\,35\,\,a\,b \,-30$

$\,6\,a\;(\,-8\,a+\,b) = $   ?

$\,-48\,\,a^2 +\,6\,\,a\,b$ $\,-48\,\,a^2 +\,b$ $\,48\,\,a^2 +\,7\,\,a\,b$ $\,-2\,\,a^2 +\,7\,\,a\,b$ $\,-48\,\,a^2 \,-6\,b$ $\,-48\,a +\,6\,\,a\,b$

$\,4\,b\;(\,5+\,3\,b) = $   ?

$\,9\,\,b +\,7\,\,b^2$ $\,20\,\,b +\,3\,b$ $\,20\,\,b +\,7\,\,b^2$ $\,-20 +\,12\,\,b^2$ $\,20\,\,b \,-12\,b$ $\,20\,\,b +\,12\,\,b^2$

$\,3\,t\;(\,-9+\,5\,t) = $   ?

$\,-27\,\,t \,-15\,t$ $\,27\,\,t +\,15\,t$ $\,-27\,\,t +\,5\,t$ $\,-27\,\,t +\,15\,\,t^2$ $\,-6\,\,t +\,8\,\,t^2$ $\,-27\,\,t +\,8\,\,t^2$

$\,4\;(\,-9\,y\,-8\,x) = $   ?

$\,-5\,\,y \,-4\,\,x$ $\,-36\,\,y \,-4\,x$ $\,-36\,\,y \,-8\,x$ $\,-36\,\,y \,-32\,\,x$ $\,-36\,\,y +\,8\,\,x$ $\,-36\,\,y +\,32\,\,x$

$\,5\,a\;(\,-8\,b+\,5) = $   ?

$\,-40\,\,a\,b +\,10\,\,a$ $\,-40\,\,a\,b \,-25$ $\,-40\,\,a\,b +\,25\,\,a$ $\,40\,b +\,25\,\,a$ $\,-40\,\,a\,b +\,5$ $\,-3\,\,a\,b +\,10\,\,a$

$(\,-4\,a\,-9)\,\times\,(\,-2\,) = $   ?

$\,8\,\,a \,-9$ $\,8\,\,a +\,9$ $\,8\,\,a \,-11$ $\,8\,\,a +\,18$ $\,8\,\,a \,-18$ $\,-6\,\,a \,-11$

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

$\,\,y^2 +\,6\,\,x\,y$ $\,-20\,\,y^2 +\,x$ $\,20\,\,y^2 +\,5\,x$ $\,-20\,\,y^2 +\,5\,\,x\,y$ $\,-20\,\,y^2 \,-5\,x$ $\,-20\,\,y^2 +\,6\,\,x\,y$