Question 529392
{{{ 4*log( 5*(x+3) )- log( 5*(x-18)) - log( 5,(x-1)) }}}
{{{ log( 5,(x+3)^4 )- log( 5,(x-18)) - log( 5,(x-1)) }}} 
{{{ log( 5, ( ( x + 3 )^4 / ((x-18)*(x-1))) ) }}}
I'm not sure if it can be simplified beyond this