Simplify the radical expression: $$ \sqrt{72} $$

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To simplify the radical expression $$ \sqrt{72} $$, follow these steps:

1. **Factor the Number Inside the Radical:**
   
   Begin by finding the prime factors of 72.
   
   $$
   72 = 36 \times 2 = 6^2 \times 2
   $$
   
2. **Apply the Square Root Property:**
   
   The square root of a product is the product of the square roots.
   
   $$
   \sqrt{72} = \sqrt{36 \times 2} = \sqrt{36} \times \sqrt{2}
   $$
   
3. **Simplify the Square Roots:**
   
   $$
   \sqrt{36} = 6 \quad \text{and} \quad \sqrt{2} \text{ remains as is since 2 is a prime number.}
   $$
   
4. **Combine the Simplified Terms:**
   
   $$
   \sqrt{72} = 6\sqrt{2}
   $$
   
**Final Answer:**

$$
\sqrt{72} = 6\sqrt{2}
$$
$$ \sqrt{72} = 6\sqrt{2} $$

Simplify the radical expression:

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