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For any nonzero numbers and and any integer , and
Examples: Example 1. Simplify. Solution: Use Exponent’s rules: Example 2. Simplify. Solution: First, cancel the common factor: Use Exponent’s rules:, Then: Example 3. Simplify. Solution: Use Exponent’s rules: Example 4. Simplify. Solution: First, cancel the common factor: Use Exponent’s rules:, Then:
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