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8x + 3 ≠ 0
8x ≠ -3
x ≠
Interval Notation: (∞, ) U (
, ∞)
If the quadratic is a perfect square, then there has to be a way to write the quadratic as 
, where 
is a root of the equation. Expanding it out, we see that
Now let's compare this form to the one that we were given. Since
matches up with 
, has to equal either 
or 
. So, since 
in the original equation matches up with 
in the equation we found, 
and
or 
Now let's compare this form to the one that we were given. Since