Question

find the domain of each rational expression in set notation.
x^2-36 divided by 3x

7w-2 divided by 16w^2-1

Then do both rational expressions have excluded values in their domains? If yes, explain why they are to be excluded from the domains. If no, explain why no exclusions are necessary.

Answer 1

domains of polynomials are all reals

for rational functions, exclude points where the denominator is zero. After all, division by zero is not defined.

Answer 2

6b-3/3b^2-12