The "Into Math Advanced 2 2020 (2)" by Houghton Mifflin School Homeschool is an answer book specifically designed for advanced level math students being homeschooled. Written by HMH, this publication focuses on providing detailed answers and explanations related to math concepts covered in an advanced curriculum. With a focus on providing support and guidance for homeschooling students, this book serves as a valuable resource for those looking to enhance their math skills and understanding.