Question 1048545
{{{(1/( mu -5)) -(10/( mu^2 -5mu + 25)) = 1 /( mu + 5)}}}



{{{(1( mu^2 -5mu + 25)/(( mu^2 -5mu + 25)( mu -5))) -(10( mu -5))/(( mu -5)( mu^2 -5mu + 25)) = 1 /( mu + 5)}}}



{{{( mu^2 -5mu + 25 -10( mu -5))/(( mu -5)( mu^2 -5mu + 25)) = 1 /( mu + 5)}}}


{{{( mu^2 -5mu + 25 -10mu +50)/(( mu -5)( mu^2 -5mu + 25)) = 1 /( mu + 5)}}}


{{{( mu^2 -15mu + 75 )/(( mu -5)( mu^2 -5mu + 25)) = 1 /( mu + 5)}}}...cross multiply


{{{( mu^2 -15mu + 75 )( mu + 5) = 1( mu -5)( mu^2 -5mu + 25)}}}


{{{cross(mu^3)-cross(10mu^2)+375 = cross(mu^3)-cross(10mu^2)+50mu-125}}}


{{{375 =50mu-125}}}


{{{375+125 =50mu}}}


{{{500 =50mu}}}


{{{500/50 =mu}}}


{{{mu=10}}}