Full Idea
We might prefer λx(Fx∧Gx)(a) as the symbolization of 'John is cold and hungry', since it treats 'is cold and hungry' as a single predicate.
Gist of Idea
λ can treat 'is cold and hungry' as a single predicate
Source
Theodore Sider (Logic for Philosophy [2010], 5.5)
Book Reference
Sider,Theodore: 'Logic for Philosophy' [OUP 2010], p.127