Question

Find the product:

(p² – q²) (2p + q)

Answer 1

(p² – q²) (2p + q)

= p² (2p + q) – q² (2p + q)

= p² x 2p + p² x q – q² x 2p – q² x q

= 2p³ + p²q – 2q²p – q³