Question 1125161
{{{f(x)=(7 (x+54)(x-40))/((x+56)(x+87)(x-55))}}}

holes: 
To find the holes in a rational function, you must factor the numerator and denominator of the rational function and see if there are any common factors, then simplify it. If there is the same factor in  the numerator and denominator, there is a hole.

you are given
{{{f(x)=(7 (x+54)(x-40))/((x+56)(x+87)(x-55))}}} which is already factored and you can see there is nothing to simplify,  there are no common factors, means there are {{{no }}}holes



and vertical asymptotes:


I'll find any vertical asymptotes, by setting the denominator equal to zero and solving:

 {{{(x+56)(x+87)(x-55)=0}}}

and it is

{{{(x+56)=0}}}->{{{x=-56}}}
{{{(x+87)=0}}}->{{{x=-87}}}
{{{(x-55)=0}}}->{{{x=55}}}
a vertical asymptotes are at {{{x=-56}}},{{{x=-87}}},and {{{x=55}}}



{{{drawing( 600, 600, -130, 130, -10,10,
line(-56,10,-56,-10),line(-87,10,-87,-10),line(55,10,55,-10),
 graph( 600, 600, -130, 130, -10,10,(7 (x+54)(x-40))/((x+56)(x+87)(x-55))))) }}}