please use truth table.

2. [10] Using the identities of propositional calculus, prove that (P+Q) ((PVQ) (PAQ) ) is true. 3. [10] Using the identities of propositional calculus, prove that (( PQ)^-Q) P is true. 4. [10] Is (( PQ) AQ) P true or false? You need to prove your