Question 866772

{{{f(x)= (2x+3)/(4x^2-14x-18)}}}

{{{f(x)= (2x+3)/(2(x+1)(2x-9))}}}
So restrictions on the domain occur when,
{{{x+1=0}}}
{{{x=-1}}}
and
{{{2x-9=0}}}
{{{2x=9}}}
{{{x=9/2}}}
.
.
.
({{{-infinity}}},{{{-1}}})U ({{{-1}}},{{{9/2}}})U ({{{9/2}}},{{{infinity}}})