$1.$ Expand in a two$-$object universe $($the objects are named $\text{'}$a$\text{'}$ and $\text{'}$b$\text{'})$

$($a$)($Ex$)$ ~~$($Cy v $($Fx ~Ga$))$

Expanding a wff is not the same as rewriting the wff in conjunctive normal form $($or rewriting it in disjunctive normal form$).$ Read the text and my handout on how to do an expansion.