Question 190789
{{{8/(y^2-64)- (y-5)/(2y^2-15y-8)}}}
= {{{8/((y-8)*(y+8)) - (y-5)/((2y+1)*(y-8))}}}
LCD = (y-8)*(y+8)*2y+1)
----------------
= {{{8*(2y+1)/LCD - (y-5)*(y+8)/LCD}}}
= {{{16y + 8 - y^2 - 3y + 40)/LCD}}}
= {{{(-y^2 + 13y + 48)/LCD}}}
= {{{-(y^2 - 13y - 48)/((y-8)*(y+8)*2y+1))}}}