1. The problem asks to write an expression involving $p(x)$ and the number $-5$. 2. Since the instruction is to write an expression with $p(x)$ and $-5$, a simple expression could be $p(x) - 5$. 3. This expression means we take the function $p(x)$ and subtract 5 from its value. 4. There are no further simplifications or operations needed unless more context is given. Final expression: $$p(x) - 5$$