$\,2\;(\,7+\,8\,a) = $   ?

$\,14 +\,8\,a$ $\,14 \,-16\,\,a$ $\,-14 +\,10\,\,a$ $\,9 +\,10\,\,a$ $\,14 +\,16\,\,a$ $\,14 \,-8\,\,a$

$(\,4\,-6\,x)\,\times\,\,3 = $   ?

$\,12 +\,6\,\,x$ $\,12 +\,18\,\,x$ $\,7 \,-3\,\,x$ $\,12 \,-18\,\,x$ $\,12 \,-3\,x$ $\,12 \,-6\,x$

$\,2\,b\;(\,-3\,b+\,9\,a) = $   ?

$\,-\,\,b^2 +\,11\,\,a\,b$ $\,-6\,\,b^2 +\,9\,a$ $\,6\,\,b^2 +\,18\,a$ $\,-6\,\,b^2 \,-18\,a$ $\,-6\,\,b^2 +\,11\,\,a\,b$ $\,-6\,\,b^2 +\,18\,\,a\,b$

$\,3\,t\;(\,8\,t+\,7\,x) = $   ?

$\,24\,\,t^2 \,-21\,x$ $\,-24\,\,t^2 +\,10\,\,t\,x$ $\,24\,\,t^2 +\,21\,\,t\,x$ $\,11\,\,t^2 +\,10\,\,t\,x$ $\,24\,\,t^2 +\,7\,x$ $\,24\,\,t^2 +\,21\,x$

$\,-2\,b\;(\,7+\,a) = $   ?

$\,-14 \,-2\,\,a\,b$ $\,-14\,\,b \,-2\,\,a\,b$ $\,5\,\,b \,-\,\,a\,b$ $\,14 +\,\,a\,b$ $\,-14\,\,b +\,a$ $\,-14\,\,b +\,2\,a$

$\,4\;(\,6\,x\,-4\,y) = $   ?

$\,10\,\,x $ $\,24\,\,x +\,16\,\,y$ $\,24\,\,x +\,4\,\,y$ $\,24\,\,x \,-4\,y$ $\,24\,\,x \,-16\,\,y$ $\,24\,\,x $

$\,5\,x\;(\,3\,x\,-1) = $   ?

$\,8\,\,x^2 +\,4\,\,x$ $\,15\,\,x^2 +\,5$ $\,-15\,\,x^2 \,-5$ $\,15\,\,x^2 \,-5\,\,x$ $\,15\,\,x^2 \,-1$ $\,15\,\,x^2 +\,4$

$(\,5\,t\,-6)\,\times\,(\,-4\,) = $   ?

$\,-20\,\,t \,-6$ $\,20\,\,t \,-10$ $\,-20\,\,t \,-24$ $\,\,t \,-10$ $\,-20\,\,t +\,24$ $\,-20\,\,t +\,6$

$(\,2\,a+\,6)\,\times\,\,5\,b = $   ?

$\,-10\,\,a\,b +\,30$ $\,10\,\,a\,b +\,30\,\,b$ $\,10\,\,a\,b +\,11\,\,b$ $\,7\,\,a\,b +\,11\,\,b$ $\,10\,\,a\,b +\,6$ $\,10\,\,a\,b \,-30$

$(\,6\,y+\,8)\,\times\,\,4\,y = $   ?

$\,24\,\,y^2 +\,32\,\,y$ $\,10\,\,y^2 +\,12\,\,y$ $\,24\,\,y^2 +\,8$ $\,-24\,\,y^2 +\,32$ $\,24\,\,y^2 +\,12\,\,y$ $\,24\,\,y^2 \,-32$