Question

For the rational expression, list the values that are excluded from the domain.

4/x^2-9x+20

Answer 1

set the denominator = 0, solve, and those are out

Answer 2

\[x^2-9x+20=0\]
\[(x-5)(x-4_=0\]
\[x=5\] or \[x=4\] and those values are excluded

Answer 3

if its \[\frac{4}{x^2}-9x-20\ then\ only\ x=0\ isn't\ permissible.\]