Solving AMC 12A 2020 #25. Elegant AMC 12 Finale!

preview_player
Показать описание
In this video, we take on the daunting AMC 12 finale of 2020. This problem is hard, but with a couple of algebraic tricks, we solve it.
Рекомендации по теме
Комментарии
Автор

13:56 we could have simply the LHS first by rationalising it and then squaring

Cooososoo
Автор

Why does the sum of the numbers 1+2+3... need to be less than 420?

sawyersmith