Discussionhttps://ashford.instructure.com/coursesExplain in your own words what the meaning of domain is. Also, explain why a denominatorcannot be zero.Find the domain for each of your two rational expressions.Write the domain of each rational expression in set notation (as demonstrated in the example).Do both of your rational expressions have excluded values in their domains? If yes, explain whythey are to be excluded from the domains. If no, explain why no exclusions are necessary.Incorporate the following five math vocabulary words into your discussion. Use bold font toemphasize the words in your writing. Do not write definitions for the words; use themappropriately in sentences describing your math work.DomainExcluded valueSetFactorReal numbers