Math Problem Statement

Simplify the expression \( \frac{\sqrt{54a^3}}{\sqrt{2a}} \)

Solution

The given expression from the image is:

54a32a\frac{\sqrt{54a^3}}{\sqrt{2a}}

Step 1: Simplify each square root

Using the property of square roots: xy=xy,\sqrt{\frac{x}{y}} = \frac{\sqrt{x}}{\sqrt{y}}, we can rewrite the entire square root as a single square root: 54a32a=54a32a.\frac{\sqrt{54a^3}}{\sqrt{2a}} = \sqrt{\frac{54a^3}{2a}}.

Step 2: Simplify the fraction under the square root

Simplify 54a32a\frac{54a^3}{2a}: 54a32a=542a3a=27a2.\frac{54a^3}{2a} = \frac{54}{2} \cdot \frac{a^3}{a} = 27a^2.

So, the expression becomes: 27a2.\sqrt{27a^2}.

Step 3: Simplify the square root

Split the square root using the property xy=xy\sqrt{xy} = \sqrt{x} \cdot \sqrt{y}: 27a2=27a2.\sqrt{27a^2} = \sqrt{27} \cdot \sqrt{a^2}.

  • The square root of a2a^2 is aa.
  • Simplify 27\sqrt{27}: 27=93=93=33.\sqrt{27} = \sqrt{9 \cdot 3} = \sqrt{9} \cdot \sqrt{3} = 3\sqrt{3}.

Thus, 27a2=3a3\sqrt{27a^2} = 3a\sqrt{3}.

Final Answer:

54a32a=3a3.\frac{\sqrt{54a^3}}{\sqrt{2a}} = 3a\sqrt{3}.

Let me know if you'd like further clarifications or have any questions!

Related Questions:

  1. How can we simplify a square root containing both constants and variables?
  2. What are the key properties of square roots used in simplifying radical expressions?
  3. How do we handle division of square roots with different bases?
  4. Can 54a3\sqrt{54a^3} be simplified before dividing by 2a\sqrt{2a}?
  5. How do we verify the result of such simplifications algebraically?

Tip:

Always check for factors that are perfect squares when simplifying square roots to ensure complete simplification!

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Math Problem Analysis

Mathematical Concepts

Square Roots
Simplifying Radical Expressions
Algebraic Fractions

Formulas

\sqrt{\frac{x}{y}} = \frac{\sqrt{x}}{\sqrt{y}}
\sqrt{xy} = \sqrt{x} \cdot \sqrt{y}

Theorems

Properties of Square Roots

Suitable Grade Level

Grades 8-10