## Geometry: Common Core (15th Edition)

Published by Prentice Hall

# Entry-Level Assessment - Page xxxix: 12

#### Answer

F) $3a^2\sqrt{5a}$

#### Work Step by Step

To simplify a square root, factor out the perfect squares, then find the square root of those perfect squares. $\sqrt{45a^5}=\sqrt{9\times5\times\ a^4\times a}=3a^2\sqrt{5a}$

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