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! Exercise 3.4.2: Prove or disprove cach of the following statements about regular expressions b) * c) (RS + R). R = R(SR + R)..

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! Exercise 3.4.2: Prove or disprove cach of the following statements about regular expressions b) * c) (RS + R). R = R(SR + R).. (RS + R). RS (RRS)" d) (R+S) S- (R'S)

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