Question 584061
{{{ log(x-2) + log(x+2) -.5*log(x^2+4) }}}
{{{ log((x-2)*(x+2)) -.5*log(x^2+4) }}}
{{{ log(( x^2 - 4)) - log( sqrt(x^2 + 4)) }}}
{{{ log( (x^2 - 4)/sqrt(x^2 + 4) ) }}}