MathScene, Powers Lesson 2. - Secondary School. - Rasmus
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| © 2006 Rasmus ehf | Powers |  |
Lesson 2.
1. Multiplying powers with the same base but different exponents:
To multiply powers with the same base you add the exponents.
2. Dividing powers with the same base but different exponents:
To divide powers with the same base you subtract the exponents.
 | The exponent '1' is not usually shown. |
3. You can choose differnet ways to simplify
 | or |  |
| If you expand the expression |  | you can simplify the problem by cancelling. |
4. Any number that is written with the power 0 always equals 1 .
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 |
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Examples:
| 1. |  |
| 2. |  |
| 3. |  |
Now try Quiz 2 on Powers.
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