Question 856537
{{{(f(6)-f(2))/(6-2)=((2(2)^2-4)-(2(6^2)-4))/(4)}}}
{{{(f(6)-f(2))/(6-2)=((2(4)-4)-(2(36)-4))/(4)}}}
{{{(f(6)-f(2))/(6-2)=((8-4)-(72-4))/(4)}}}
{{{(f(6)-f(2))/(6-2)=(4-68)/(4)}}}
{{{(f(6)-f(2))/(6-2)=(-64)/(4)}}}
{{{(f(6)-f(2))/(6-2)=-16}}}