Difference of squares — AMC & AIME Problems
Practice every real AMC 8, AMC 10, AMC 12, and AIME problem that uses difference of squares — a algebra concept — each with a professionally curated solution, many with a video solution too, from LIVE by Po-Shen Loh. Browse all concepts or the full past-contest archive.
All of these problems are used with official legal permission of the Mathematical Association of America (MAA).
AMC 8
2007 AMC 8 Problem 19 · 2016 AMC 8 Problem 15 · 2019 AMC 8 Problem 20 · 2019 AMC 8 Problem 22 · 2025 AMC 8 Problem 23
AMC 10
2001 AMC 10 Problem 11 · 2001 AMC 10 Problem 24 · 2005 AMC 10A Problem 24 · 2005 AMC 10B Problem 24 · 2006 AMC 10B Problem 2 · 2007 AMC 10A Problem 23 · 2009 AMC 10A Problem 11 · 2011 AMC 10A Problem 19 · 2012 AMC 10A Problem 22 · 2014 AMC 10B Problem 17 · 2018 AMC 10A Problem 10 · 2019 AMC 10A Problem 19 · 2020 AMC 10B Problem 22 · 2021 AMC 10A Spring Problem 10 · 2021 AMC 10B Fall Problem 3 · 2021 AMC 10B Fall Problem 8 · 2022 AMC 10B Problem 5 · 2023 AMC 10A Problem 23 · 2023 AMC 10B Problem 9 · 2024 AMC 10A Problem 11 · 2024 AMC 10A Problem 15
AMC 12
1999 AMC 12 Problem 15 · 2005 AMC 12B Problem 19 · 2006 AMC 12B Problem 2 · 2009 AMC 12A Problem 5 · 2009 AMC 12B Problem 19 · 2011 AMC 12B Problem 15 · 2011 AMC 12B Problem 21 · 2016 AMC 12A Problem 7 · 2016 AMC 12B Problem 10 · 2020 AMC 12B Problem 2 · 2021 AMC 12A Spring Problem 9 · 2021 AMC 12B Fall Problem 6 · 2022 AMC 12B Problem 8 · 2024 AMC 12A Problem 9
AIME
1997 AIME Problem 1 · 1999 AIME Problem 3 · 2000 AIME II Problem 2 · 2003 AIME I Problem 2 · 2003 AIME I Problem 7 · 2003 AIME I Problem 12 · 2003 AIME II Problem 10 · 2005 AIME I Problem 4 · 2005 AIME II Problem 3 · 2005 AIME II Problem 7 · 2006 AIME I Problem 7 · 2006 AIME II Problem 5 · 2006 AIME II Problem 13 · 2008 AIME I Problem 4 · 2008 AIME II Problem 1 · 2008 AIME II Problem 15 · 2010 AIME I Problem 5 · 2012 AIME I Problem 10 · 2017 AIME II Problem 6 · 2022 AIME I Problem 5 · 2026 AIME I Problem 3