(2p×5a)⁴ Tolong bantu jawab , please.............

(2p×5a)(2p×5a)
=2p×2p
2p×5a
5a×2p
5a×5a
=4p^2+10ap+10ap+25a^2
=4p^2+20ap+25a^2
maaf kalau salah