Скачать или смотреть Is (7² – 1) Divisible by 6? Understanding the Math Behind It🤓✔

In this video, we solve the expression (7² – 1) ÷ 6 step by step—and uncover a surprising math pattern! You’ll learn why expressions like (n² – 1) are often divisible by 6, especially when n is an odd number or prime.

👉 Perfect for students, math lovers, or anyone preparing for competitive exams like SAT, GRE, or Olympiads!

✅ What you’ll learn:
How to simplify (7² – 1)/6
The difference of squares formula: a² – b² = (a–b)(a+b)
Why (n² – 1) is divisible by 6 for many integers n
A quick mental math trick you can use anytime!

📚 Related topics: Algebra, Number Theory, Divisibility Rules, Math Shortcuts

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