Algebra: Exponents and operations on exponents

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Exponentiation to the degree that is a positive, integer number is the operation of multiplying the number by itself the number of times that is the power. Example: 2%5E4+=+2%2A2%2A2%2A2. Negative exponentiation means the same thing, but at the last moment you take the inverse of the product: 2%5E-3+=+1%2F%282%2A2%2A2%29.
Multiplying adds exponents: 2%5E2%2A2%5E3+=+%282%2A2%29%2A%282%2A2%2A2%29+=+2%5E5+=+2%5E%282%2B3%29. Dividing subtracts exponents: 2%5E2%2F2%5E3+=+2%2A2%2F%282%2A2%2A2%29+=+1%2F2+=+2%5E-1+=+2%5E%282-3%29.

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