$(\,3+\,5\,b)\,\times\,\,4 = $   ?

$\,12 \,-20\,\,b$ $\,12 +\,20\,\,b$ $\,-12 +\,9\,\,b$ $\,12 +\,5\,b$ $\,7 +\,9\,\,b$ $\,12 \,-5\,\,b$

$\,5\;(\,-6\,x\,-7) = $   ?

$\,-30\,\,x \,-2$ $\,-\,\,x \,-2$ $\,-30\,\,x +\,35$ $\,-30\,\,x +\,7$ $\,-30\,\,x \,-35$ $\,-30\,\,x \,-7$

$\,3\;(\,-4\,y\,-6\,x) = $   ?

$\,-\,\,y \,-3\,\,x$ $\,-12\,\,y +\,6\,\,x$ $\,-12\,\,y \,-3\,x$ $\,-12\,\,y \,-18\,\,x$ $\,-12\,\,y \,-6\,x$ $\,-12\,\,y +\,18\,\,x$

$\,4\,x\;(\,4+\,2\,y) = $   ?

$\,16\,\,x \,-8\,y$ $\,16\,\,x +\,8\,\,x\,y$ $\,16\,\,x +\,6\,\,x\,y$ $\,8\,\,x +\,6\,\,x\,y$ $\,16\,\,x +\,2\,y$ $\,-16\,\,x +\,8\,y$

$\,-4\;(\,7\,t\,-2) = $   ?

$\,-28\,\,t \,-8$ $\,28\,\,t \,-6$ $\,-28\,\,t +\,2$ $\,3\,\,t \,-6$ $\,-28\,\,t +\,8$ $\,-28\,\,t \,-2$

$\,3\,x\;(\,1+\,4\,x) = $   ?

$\,-3\,\,x +\,7\,\,x^2$ $\,3\,\,x \,-12\,x$ $\,3 +\,12\,\,x^2$ $\,4\,\,x +\,7\,\,x^2$ $\,3\,\,x +\,4\,x$ $\,3\,\,x +\,12\,\,x^2$

$\,5\,b\;(\,-1+\,3\,b) = $   ?

$\,-5\,\,b \,-15\,b$ $\,5\,\,b +\,8\,\,b^2$ $\,4\,\,b +\,8\,\,b^2$ $\,-5\,\,b +\,15\,b$ $\,-5\,\,b +\,3\,b$ $\,-5\,\,b +\,15\,\,b^2$

$(\,-3\,a\,-8\,b)\,\times\,\,4\,a = $   ?

$\,\,a^2 \,-4\,\,a\,b$ $\,-12\,\,a^2 \,-8\,b$ $\,-12\,\,a^2 +\,32\,b$ $\,-12\,\,a^2 \,-4\,b$ $\,12\,\,a^2 \,-32\,b$ $\,-12\,\,a^2 \,-32\,\,a\,b$

$(\,-8\,t+\,2\,x)\,\times\,\,4\,t = $   ?

$\,-32\,\,t^2 +\,8\,\,t\,x$ $\,-32\,\,t^2 \,-8\,x$ $\,32\,t +\,8\,\,t\,x$ $\,-32\,\,t^2 +\,6\,\,t\,x$ $\,-32\,\,t^2 +\,2\,x$ $\,-4\,\,t^2 +\,6\,\,t\,x$

$(\,-9\,-2\,b)\,\times\,(\,-3\,a\,) = $   ?

$\,-27\,\,a \,-5\,b$ $\,27 +\,6\,\,a\,b$ $\,-12\,\,a \,-5\,\,a\,b$ $\,27\,\,a +\,6\,\,a\,b$ $\,27\,\,a \,-6\,b$ $\,27\,\,a \,-2\,b$