Question 778360
{{{2*log(8,N)=P}}}
{{{log(2,2*N)=Q}}}


{{{Q-P=4}}}
{{{log(2,2*N) - 2*log(8,N) = 4}}}
{{{log(2,2)+log(2,N) - 2*(log(2,N))/log(2,8) = 4}}}
{{{1+log(2,N) - 2*(log(2,N))/log(2,2^3) = 4}}}
{{{1+log(2,N) - 2*(log(2,N))/(3*log(2,2)) = 4}}}
{{{1+log(2,N) - 2*(log(2,N))/3 = 4}}}
{{{1+log(2,N)/3 = 4}}}
{{{log(2,N)/3 = 3}}}
{{{log(2,N) = 9}}}
{{{N = 2^9 = 512}}}