Reference book for deepening the understanding of mathematics. - Title: Advance Alpha Advance α Mathematics I+A - Answer Edition: Answer Edition - Published Year: 2022 - Publisher: Keirinkan Thank you for viewing. There are scratches and folded marks on the cover, spine, and corners, and there are folded marks on the cover regarding the answers. Also, there are check marks written on the problems, and the names written on the back of the cover of both books will be blacked out. Thank you for your understanding.