Question 1028511
{{{ log( 5, ( z/25)^3 ) }}}
{{{ log( 5, ( z^3/25^3) ) }}}
{{{ log( 5,( z^3) ) - log( 5, (25^3) ) }}}
{{{ 3*log( 5, (z) ) - 3*( log( 5, 25 )) }}}
{{{ 3*log( 5, (z) ) - 3*2 }}}
{{{ 3*log( 5,(z) ) - 6 }}}
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check answer
I will suppose that {{{ z = 125 }}}
{{{ log( 5, ( z/25)^3 ) }}}
{{{ log( 5, ( 125/25)^3 ) }}}
{{{ log( 5, (5^3) ) = 3 }}}
and
{{{ 3*log( 5,(z) ) - 6 }}}
{{{ 3*log( 5,(125) ) - 6 }}}
{{{ 3*log( 5, (5^3) ) - 6 }}}
{{{ 3*3 - 6 = 9 - 6 }}}
{{{ 9 - 6 = 3 }}}
OK