Compute 3^2 * 3^7.

Prepare for the Praxis Middle School Mathematics Exam with quizzes. Study with flashcards and multiple choice questions. Each question provides hints and detailed explanations. Ensure success on your test!

Multiple Choice

Compute 3^2 * 3^7.

Explanation:
When you multiply powers with the same base, you add the exponents. So 3^2 * 3^7 equals 3^(2+7) = 3^9. You can check by calculation: 3^2 = 9 and 3^7 = 2187, and 9 * 2187 = 19683, which is 3^9. The other options come from misapplying the exponent rule, such as adding a different amount or subtracting, which isn’t what happens when multiplying powers with the same base.

When you multiply powers with the same base, you add the exponents. So 3^2 * 3^7 equals 3^(2+7) = 3^9. You can check by calculation: 3^2 = 9 and 3^7 = 2187, and 9 * 2187 = 19683, which is 3^9. The other options come from misapplying the exponent rule, such as adding a different amount or subtracting, which isn’t what happens when multiplying powers with the same base.

Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy