Question 685649
{{{ ln(x/(x-7))+ln((x+7)/x)-ln(x^2-49) }}}
{{{ ln( (x/(x-7))*((x+7)/x) ) - ln(x^2-49) }}}
{{{ ln( ((x+7)/( x-7)) / ((x+7)*(x-7)) )
{{{ ln( ( 1 / (x-7)^2 ) }}}
{{{ ln( (x-7)^(-2) ) }}}
{{{ -2*ln( x-7 ) }}}