Question

Помогите пожалуйста(2(p+q)/(p^3-q^3))+2/(q^2-p^2)

Answer 1

2(p+g) (p-g)(p²+pg+g²) - 2 (p-g)(p+g) =
( 2(p+g)(p+g) - 2(p²+pg+g²))(p-g)(p+g)(p²+pg+g²)=
(2p²+4pg+2g²-2p²-2pg-2g²) (p-g)(p+g)(p²+pg+g²)=
4pg (p³-g³)(p+g)