$\,6\;(\,-9+\,5\,b) = $   ?

$\,-54 \,-5\,\,b$ $\,-54 +\,11\,\,b$ $\,-54 +\,30\,\,b$ $\,-3 +\,11\,\,b$ $\,-54 \,-30\,\,b$ $\,-54 +\,5\,b$

$(\,-3\,-3\,b)\,\times\,\,3 = $   ?

$\,-9 +\,3\,\,b$ $\,-9 +\,9\,\,b$ $\,0 $ $\,-9 \,-9\,\,b$ $\,9 $ $\,-9 \,-3\,b$

$\,4\;(\,7\,x+\,8\,y) = $   ?

$\,28\,\,x +\,8\,y$ $\,28\,\,x +\,12\,\,y$ $\,28\,\,x \,-8\,\,y$ $\,28\,\,x \,-32\,\,y$ $\,28\,\,x +\,32\,\,y$ $\,11\,\,x +\,12\,\,y$

$\,5\,a\;(\,7+\,4\,b) = $   ?

$\,35\,\,a \,-20\,b$ $\,-35 +\,20\,\,a\,b$ $\,12\,\,a +\,9\,\,a\,b$ $\,35\,\,a +\,4\,b$ $\,35\,\,a +\,9\,\,a\,b$ $\,35\,\,a +\,20\,\,a\,b$

$(\,6+\,4\,b)\,\times\,\,6\,b = $   ?

$\,12\,\,b +\,10\,\,b^2$ $\,36\,\,b +\,24\,\,b^2$ $\,-36 +\,24\,\,b^2$ $\,36\,\,b +\,4\,b$ $\,36\,\,b +\,10\,\,b^2$ $\,36\,\,b \,-24\,b$

$\,4\,t\;(\,2\,t+\,6) = $   ?

$\,-8\,\,t^2 +\,10\,\,t$ $\,8\,\,t^2 +\,24\,\,t$ $\,8\,\,t^2 \,-24$ $\,8\,\,t^2 +\,6$ $\,8\,\,t^2 +\,24$ $\,6\,\,t^2 +\,10\,\,t$

$(\,-5\,b\,-2)\,\times\,(\,-3\,) = $   ?

$\,15\,\,b \,-2$ $\,-15\,\,b \,-5$ $\,15\,\,b \,-6$ $\,15\,\,b +\,2$ $\,-8\,\,b \,-5$ $\,15\,\,b +\,6$

$(\,-8\,y+\,3\,x)\,\times\,\,2\,y = $   ?

$\,-6\,\,y^2 +\,5\,\,x\,y$ $\,-16\,\,y^2 +\,3\,x$ $\,-16\,\,y^2 +\,6\,\,x\,y$ $\,-16\,\,y^2 \,-6\,x$ $\,-16\,y +\,6\,\,x\,y$ $\,16\,\,y^2 +\,5\,\,x\,y$

$\,2\,x\;(\,-5\,x\,-9\,y) = $   ?

$\,-3\,\,x^2 \,-7\,\,x\,y$ $\,10\,\,x^2 \,-7\,y$ $\,-10\,\,x^2 \,-9\,y$ $\,-10\,\,x^2 +\,18\,y$ $\,-10\,\,x^2 \,-18\,\,x\,y$ $\,-10\,x \,-18\,\,x\,y$

$\,-4\,t\;(\,7\,x+\,4) = $   ?

$\,28\,x $ $\,3\,\,t\,x $ $\,-28\,\,t\,x +\,4$ $\,-28\,x \,-16\,\,t$ $\,-28\,\,t\,x \,-16\,\,t$ $\,-28\,\,t\,x +\,16$