Algebra Shortcut Trick | 99 × 101 Fast Calculation | a² − b² Identity | Maths Trick Day 3

Description:
In this video, we learn a simple Algebra shortcut trick using the identity (a² − b²). This method helps you solve multiplication like 99 × 101 very quickly without long calculation.
📚 Concept Used:
(a − b)(a + b) = a² − b²
Example:
99 × 101
= (100 − 1)(100 + 1)
= 100² − 1
= 10000 − 1
= 9999
This trick is very helpful for students, competitive exams, and fast calculation practice.
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✅ Improve Calculation Speed
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Channel: SS Maths Skill
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Видео Algebra Shortcut Trick | 99 × 101 Fast Calculation | a² − b² Identity | Maths Trick Day 3 канала SS MATHS SKILL