2.
(P -> Q) v Q
(PQ + P + 1)Q + PQ + P + 1 + Q
PQQ + PQ + Q + PQ + P + 1 + Q
PQ + PQ + Q + PQ + P + 1 + Q
PQ + P + 1
3.
~(P <-> Q) & P
(P + Q)P
PQ + P
4.
P -> (Q & P)
P(PQ) + P +1
PQ + P + 1
5.
~(P & Q) & Q
(PQ + 1)Q
PQ + Q