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please show steps, thank you Exercise 7. Prove (pq)(pq) using (1) truth table and (2) the substitution theorem and the known logical equivalences. (8 marks)

image text in transcribed please show steps, thank you

Exercise 7. Prove (pq)(pq) using (1) truth table and (2) the substitution theorem and the known logical equivalences. (8 marks)

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