Question 92102
Find the values that make the rational expression undefined.



                    {{{(r+6)/(r^2-r-6)}}}
Anything that would make the denominator =0 would make the expression undefined:
{{{r^2-r-6=0}}}
Factor.
{{{(r-3)(r+2)=0}}}
Set each factor = to 0 and solve for r.
r-3=0 or r+2=0
r-3+3=0+3 or r+2-2=0-2
r=3 or r=-2
Makes the expression undefined.
Happy Calculating!!!!