[Factorization] A shortcut technique that is too bad if you don't know it.

The Oldest Unsolved Problem in Math

A new factorization invented by a genius mathematician

Numberphile v. Math: the truth about 1+2+3+...=-1/12

因数分解１６　視聴者さんから寄せられた別解を紹介します。少しアレンジしています。

【伝説の東大模試】因数分解せよ

If You Know These 15 Words, Your English is EXCELLENT!

Rätsel um Käfer auf Baumstamm

小学生でも理解できるのに未だに証明できない数学の難問

This pattern breaks, but for a good reason | Moser's circle problem

【数学】中3-7 因数分解②

気付けば一瞬だが、意外と難しいのよ。因数分解

New Breakthrough on a 90-year-old Telephone Question

Hardest Exam Question | Only 8% of students got this math question correct

A tricky problem from Harvard University Interview

Problem der 100 Gefangenen

【数学】中3-6 因数分解①

The most beautiful equation in math, explained visually [Euler’s Formula]

因数定理 因数の見つけ方【数学ⅡB・高次方程式】

How do QR codes work? (I built one myself to find out)