Question: Exercise 2 ( Ex . 3 , Chapter 3 of [ Martin; 2 0 1 1 ] ) . Let r and s be arbitrary

Exercise 2(Ex.3, Chapter 3 of [Martin; 2011]).
Let r and s be arbitrary regular expressions over the alphabet . In each case below, find a simpler equivalent regular expression.
a.r(r**r+r**)+r**
b.(r+)**
Exercise 2(Ex.3, Chapter 3 of [Martin; 2011]). Let r and s

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