Smart Math Tricks 😱 | Solve (k + 5)² = 81 | Don’t Forget ± (Exam Trick)
Автор: Smart math tricks
Загружено: 2026-01-31
Просмотров: 13
Описание:
• Japanese Math Olympiad Problem
And
• Germany Math Olympiad
Welcome to Smart Math Tricks 🧠✨
In this long video, we break down a simple-looking algebra equation that many students get wrong in exams.
👉 Problem:
(k + 5)² = 81
You’ll learn:
✔️ Why square equations always give TWO answers
✔️ The correct use of the ± square root rule
✔️ Step-by-step exam-ready solving
✔️ Common mistakes and how to avoid them
✔️ Similar questions asked in USA entrance exams
⏸️ Pause the video and try solving first!
💬 Comment both values of k before watching the solution.
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