Please do this ASAP with steps and everything

Problem 12. Suppose p is a Boolean variable. Prove that pp 1. Hint. Give a Hilbert-style proof and use the ariom of "golden rule followed by equa- nimity. Problem 12. Suppose p is a Boolean variable. Prove that pp 1. Hint. Give a Hilbert-style proof and use the ariom of "golden rule followed by equa- nimity