Question 448682
The expression is undefined if the bottom of denominator is 0 as you can't /0.
So, we want to see when the bottom is 0.
...
{{{2m^2+m-3=0}}}
{{{2m^2+3m-2m-3=0}}}
{{{m(2m+3)-(2m+3)=0}}}
{{{(m-1)(2m+3)=0}}}
{{{m-1=0}}} or {{{2m+3=0}}}
{{{m=1}}} or {{{m=-3/2}}}
Therefore, if m is equal to 1 or -3/2 than the expression is undefined.