$\,3\;(\,6+\,7\,t) = $   ?

$\,18 +\,7\,t$ $\,9 +\,10\,\,t$ $\,18 \,-7\,\,t$ $\,18 \,-21\,\,t$ $\,18 +\,21\,\,t$ $\,-18 +\,10\,\,t$

$\,6\;(\,6\,x\,-3) = $   ?

$\,12\,\,x +\,3$ $\,-36\,\,x +\,3$ $\,36\,\,x +\,18$ $\,36\,\,x \,-18$ $\,36\,\,x \,-3$ $\,36\,\,x +\,3$

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

$\,-8\,\,x^2 \,-18\,y$ $\,6\,\,x^2 \,-7\,\,x\,y$ $\,8\,\,x^2 \,-7\,y$ $\,8\,\,x^2 \,-18\,\,x\,y$ $\,8\,\,x^2 \,-9\,y$ $\,8\,\,x^2 +\,18\,y$

$(\,7+\,9\,x)\,\times\,\,3\,y = $   ?

$\,21\,\,y +\,12\,\,x\,y$ $\,21\,\,y +\,9\,x$ $\,-21\,\,y +\,27\,x$ $\,10\,\,y +\,12\,\,x\,y$ $\,21\,\,y \,-27\,x$ $\,21\,\,y +\,27\,\,x\,y$

$\,6\,x\;(\,-5\,x+\,6\,y) = $   ?

$\,30\,\,x^2 +\,12\,\,x\,y$ $\,-30\,\,x^2 +\,36\,\,x\,y$ $\,\,x^2 +\,12\,\,x\,y$ $\,-30\,\,x^2 +\,6\,y$ $\,-30\,\,x^2 \,-36\,y$ $\,-30\,\,x^2 +\,36\,y$

$(\,8+\,7\,a)\,\times\,\,2\,a = $   ?

$\,16\,\,a \,-14\,a$ $\,10\,\,a +\,9\,\,a^2$ $\,16\,\,a +\,7\,a$ $\,16\,\,a +\,14\,\,a^2$ $\,-16\,\,a +\,9\,\,a^2$ $\,16 +\,14\,\,a^2$

$\,3\;(\,b+\,9\,a) = $   ?

$\,3\,\,b +\,9\,a$ $\,3\,\,b \,-27\,\,a$ $\,4\,\,b +\,12\,\,a$ $\,3\,\,b \,-9\,\,a$ $\,3\,\,b +\,27\,\,a$ $\,3\,\,b +\,12\,\,a$

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

$\,-16\,\,x +\,20\,\,x\,y$ $\,-16\,\,x \,-20\,y$ $\,-16\,\,x \,-9\,y$ $\,16\,\,x +\,20\,y$ $\,0\,\,x \,-9\,\,x\,y$ $\,-16\,\,x \,-5\,y$

$\,-2\;(\,5\,t\,-2) = $   ?

$\,-10\,\,t +\,4$ $\,-10\,\,t \,-4$ $\,-10\,\,t +\,2$ $\,-10\,\,t \,-4$ $\,-10\,\,t \,-2$ $\,3\,\,t \,-4$

$\,4\,t\;(\,7\,t+\,2) = $   ?

$\,-28\,\,t^2 +\,6\,\,t$ $\,28\,t +\,8\,\,t$ $\,28\,\,t^2 \,-8$ $\,11\,\,t^2 +\,6\,\,t$ $\,28\,\,t^2 +\,2$ $\,28\,\,t^2 +\,8\,\,t$