Question: 2. Construct a regular expression defining each of the following languages. (a) the language of all words over that do not contain the substring aab

2. Construct a regular expression defining each of the following languages. (a) the language of all words over that do not contain the substring aab, where ={a,b} (b) the language of all words over aab, where ={a,b} (b) the language of all words over that have that have different first and last letters, where ={a,b,c}

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