human
Factorise a single bracket containing a non-linear expression by taking out a single algebraic common factor (e.g. a) Jo and Paul are arguing about factorising.

Jo says \( p^{2}+16 p \equiv(p+4)(p+4) \)

Paul says \( p^{2}+16 p \equiv p(p+4) \)

Who is correct? Only Jo
gpt
When factorising a quadratic without a non variable term, tries to double bracket factorise