$\,5\;(\,6+\,4\,b) = $   ?

$\,30 +\,9\,\,b$ $\,30 +\,20\,\,b$ $\,30 \,-4\,\,b$ $\,30 +\,4\,b$ $\,30 \,-20\,\,b$ $\,11 +\,9\,\,b$

$\,6\;(\,3\,b\,-2) = $   ?

$\,18\,\,b +\,12$ $\,18\,\,b \,-2$ $\,9\,\,b +\,4$ $\,18\,\,b +\,4$ $\,18\,\,b \,-12$ $\,18\,\,b +\,2$

$\,5\,a\;(\,4+\,a) = $   ?

$\,9\,\,a +\,6\,\,a^2$ $\,20 +\,5\,\,a^2$ $\,20\,\,a \,-5\,a$ $\,20\,\,a +\,5\,\,a^2$ $\,20\,\,a +\,a$ $\,-20\,\,a +\,6\,\,a^2$

$\,6\;(\,6\,a\,-8\,b) = $   ?

$\,36\,\,a \,-8\,b$ $\,36\,\,a +\,48\,\,b$ $\,36\,\,a +\,8\,\,b$ $\,36\,\,a \,-2\,b$ $\,12\,\,a \,-2\,\,b$ $\,36\,\,a \,-48\,\,b$

$(\,-8\,a\,-5\,b)\,\times\,\,6\,a = $   ?

$\,48\,\,a^2 \,-30\,b$ $\,-2\,\,a^2 +\,\,a\,b$ $\,-48\,\,a^2 \,-30\,\,a\,b$ $\,-48\,\,a^2 +\,b$ $\,-48\,\,a^2 +\,30\,b$ $\,-48\,\,a^2 \,-5\,b$

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

$\,-5\,\,y^2 \,-25\,x$ $\,4\,\,y^2 +\,10\,\,x\,y$ $\,-5\,\,y^2 +\,25\,\,x\,y$ $\,-5\,\,y^2 +\,5\,x$ $\,5\,\,y^2 +\,25\,x$ $\,-5\,\,y^2 +\,10\,\,x\,y$

$(\,-5+\,7\,b)\,\times\,\,3\,b = $   ?

$\,15 +\,21\,\,b^2$ $\,-15\,\,b +\,7\,b$ $\,-2\,\,b +\,10\,\,b^2$ $\,-15\,\,b \,-21\,b$ $\,-15\,\,b +\,21\,\,b^2$ $\,-15\,\,b +\,10\,\,b^2$

$\,-4\,b\;(\,2+\,5\,a) = $   ?

$\,-8\,\,b +\,5\,a$ $\,8 \,-20\,\,a\,b$ $\,-8\,\,b \,-20\,\,a\,b$ $\,-8 \,-\,\,a\,b$ $\,-2\,\,b +\,\,a\,b$ $\,-8\,\,b +\,20\,a$

$\,2\,y\;(\,2+\,9\,x) = $   ?

$\,4\,\,y +\,9\,x$ $\,4\,\,y +\,11\,\,x\,y$ $\,4\,\,y +\,18\,x$ $\,-4\,\,y +\,11\,\,x\,y$ $\,4\,\,y \,-18\,x$ $\,4\,\,y +\,18\,\,x\,y$

$(\,5\,-6\,x)\,\times\,(\,-6\,) = $   ?

$\,-30 \,-36\,\,x$ $\,-30 +\,6\,\,x$ $\,-30 \,-6\,x$ $\,-30 +\,36\,\,x$ $\,-1 \,-12\,\,x$ $\,-30 \,-12\,x$