You are able to understand English sentences and use Boolean expression to express the output based on the inputs.

A software project team has one team leader and another two team members. To pass a proposal, the team leader and at least one other team member have to agree. Let F represent "the proposal is passed"; let z represent "the team leader agrees with the proposal"; let x represent another team member agrees with a proposal; let y represent the other team member agrees with the proposal.

(a) Find the minterm expansion for F.

(b) Find the maxterm expansion for F.