Roots
We already know that a number multiplied by itself more than three times is called a power (refer to Powers)
The roots works the other way: where you have the resulting power, and you want to find the number that is multiplied by itself for a number of times to get the power
Power | 24 = 2 × 2 × 2 × 2 = 16 |
Roots | 4√16 = 2 |
Root can also be written as | 16¼ = 2 |
• Examples
Root | Power | |
1. | 4√16 = 2 | 2 × 2 × 2 × 2 = 16 |
2. | 4√81 = 3 | 3 × 3 × 3 × 3 = 81 |
3. | 321/5 = 2 | 2 × 2 × 2 × 2 × 2 = 32 |
4. | 2431/5 = 3 | 3 × 3 × 3 × 3 × 3 = 243 |
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