I am trying to solve the following:
$$\left[\dfrac{((5+7\ln6)^2)}{14}\right] - \left[\dfrac{((5+7\ln4)^2)}{14}\right]$$
I know that this becomes:
$$\dfrac{1}{14}[5+7\ln6 + 5+7\ln4] x [5+7\ln6 - 5+7\ln4]$$
But I can't figure out how or what steps to take to get to that point. Can someone explain or point me in the right direction?