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Power of (−1)
Last updated at August 14, 2026 by Teachoo
Ganita Prakash Class 8 - Part 1, 2
Chapter 2 Class 8 - Power Play (Ganita Prakash)
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Basic Concepts & Formulas
- Introduction
- Exponential Notation and Operations
- Figure it out - Page 22, 23
- The Stones that Shine ...
- Formulas of Exponents
- Magical Pond
- Multiplying & Dividing two numbers with Same Power
- Combinations
- The Other Side of Powers
- Power Lines
- Powers of 10
- Scientific Notation
- Did you ever Wonder..
- Linear Growth vs Exponential Growth
- Getting a sense of Large Numbers
- A Pinch of History
- Figure it out - Page 44, 45
Transcript
Power of (−1)Suppose we have (−1)2 = −1 × −1 = 1 (−1)3 = −1 × −1 × −1 = 1 × −1 = −1 (−1)4 = −1 × −1 × −1 × −1 = 1 × 1 = 1 (−1)5 = −1 × −1 × −1 × −1 × −1 = 1 × 1 × −1 = −1 (−1)6 = −1 × −1 × −1 × −1 × −1 × −1 = 1 × 1 × 1 = 1 (−1)7 = −1 × −1 × −1 × −1 × −1 × −1 × −1 = 1 × 1 × 1 × −1 = −1 (−1)8 = −1 × −1 × −1 × −1 × −1 × −1 × −1 × −1 = 1 × 1 × 1 × 1 = 1 (−1)9 = −1 × −1 × −1 × −1 × −1 × −1 × −1 × −1 × −1 = 1 × 1 × 1 × 1 × −1 = −1 (−1)10 = −1 × −1 × −1 × −1 × −1 × −1 × −1 × −1 × −1 × −1 = 1 × 1 × 1 × 1 × 1 × 1 = 1 So, we can say that (−1)odd number = −1 (−1)even number = 1
