Can I get help with these?

4. Using only the and the ^ operators, find a logical expression that is equivalent 5. Prove that the expression you found for question 4 above is equivalent to Gpv-q) r by using logical equivalences. Show all your work. 6. Prove that the expression you found for question 4 above is equivalent to -C-pv-q) r by using truth tables. Show all your work