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Evaluate the following expressions using the positive root whenever it is applicable

The value of the expression \( 3^2 \sqrt{25} + 3 - \sqrt{81} \) is 39.

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Here are some related questions to expand your understanding:
1. What are the steps to simplify \( 3^2 \sqrt{25} \)?
2. Why do we use the positive root when simplifying square roots like \( \sqrt{25} \) or \( \sqrt{81} \)?
3. How does the order of operations apply in this expression?
4. Can square roots of negative numbers be evaluated similarly?
5. What happens if we use negative square roots instead?

**Tip:** When working with square roots, always consider whether the context specifies using the positive or negative root.

Evaluate the following expression: 3^2√25 + 3 - √81

Learn how to evaluate expressions involving exponents and square roots, such as 3^2√25 + 3 - √81. This solution explains key concepts like square roots and order of operations, suitable for students in Grades 7-9.

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