$(\,3\,x+\,2)\;(\,y+\,3) = $   ?

$\,4\,\,x\,y +\,6\,\,x +\,3\,\,y +\,5$ $\,3\,\,x\,y +\,6$ $\,3\,\,x\,y +\,9\,\,x +\,2\,\,y +\,6$ $\,14\,\,x^2\,y^2 +\,6$

$(\,5+\,3\,b)\;(\,b+\,6) = $   ?

$\,3\,\,b^2 +\,30$ $\,3\,\,b^2 +\,23\,\,b +\,30$ $\,4\,\,b^2 +\,15\,\,b +\,11$ $\,26\,\,b +\,30$

$(\,x+\,4)\;(\,1+\,y) = $   ?

$\,\,x\,y +\,4$ $\,6\,\,x^2\,y^2 +\,4$ $\,2\,\,x +\,2\,\,x\,y +\,5 +\,5\,\,y$ $\,\,x +\,\,x\,y +\,4 +\,4\,\,y$

$(\,1+\,3\,y)\;(\,4+\,y) = $   ?

$\,4\,\,y^2 +\,9\,\,y +\,5$ $\,16\,\,y +\,4$ $\,3\,\,y^2 +\,4$ $\,3\,\,y^2 +\,13\,\,y +\,4$

$(\,3\,a+\,2)\;(\,b\,-4) = $   ?

$\,3\,\,a\,b +\,12\,\,a +\,2\,\,b \,-8$ $\,-3\,\,a\,b \,-12\,\,a \,-2\,\,b \,-8$ $\,3\,\,a\,b \,-12\,\,a +\,2\,\,b \,-8$ $\,3\,\,a\,b +\,12\,\,a \,-2\,\,b \,-8$

$(\,3\,-6\,y)\;(\,-5+\,x) = $   ?

$\,-15 +\,3\,\,x +\,30\,\,y \,-6\,\,x\,y$ $\,15 +\,3\,\,x +\,30\,\,y \,-6\,\,x\,y$ $\,-15 +\,3\,\,x \,-30\,\,y +\,6\,\,x\,y$ $\,15 \,-3\,\,x +\,30\,\,y \,-6\,\,x\,y$

$(\,2\,-3\,y)\;(\,1+\,6\,y) = $   ?

$\,18\,\,y^2 +\,15\,\,y +\,2$ $\,-18\,\,y^2 +\,9\,\,y \,-2$ $\,-18\,\,y^2 +\,9\,\,y +\,2$ $\,18\,\,y^2 +\,9\,\,y +\,2$

$(\,t\,-2)\;(\,-4\,x\,-6) = $   ?

$\,-4\,\,t\,x +\,6\,\,t +\,8\,\,x \,-12$ $\,4\,\,t\,x \,-6\,\,t +\,8\,\,x \,-12$ $\,4\,\,t\,x \,-6\,\,t \,-8\,\,x +\,12$ $\,-4\,\,t\,x \,-6\,\,t +\,8\,\,x +\,12$

$(\,6\,-4\,t)\;(\,-\,t+\,6) = $   ?

$\,-4\,\,t^2 +\,18\,\,t +\,36$ $\,4\,\,t^2 +\,30\,\,t +\,36$ $\,-4\,\,t^2 \,-30\,\,t \,-36$ $\,4\,\,t^2 \,-30\,\,t +\,36$

$(\,6\,x\,-3)\;(\,-1\,-\,x) = $   ?

$\,-6\,\,x^2 +\,3\,\,x +\,3$ $\,-6\,\,x^2 +\,9\,\,x \,-3$ $\,6\,\,x^2 \,-3\,\,x \,-3$ $\,-6\,\,x^2 \,-3\,\,x +\,3$