Express the following in exponential form :
`5xx5xx7xx7xx7`

Answer

To express the given expression `5xx5xx7xx7xx7` in exponential form, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Base Numbers**:
The expression consists of two different base numbers: 5 and 7.

2. **Count the Occurrences of Each Base**:
- The base number 5 appears **2 times**.
- The base number 7 appears **3 times**.

3. **Write Each Base in Exponential Form**:
- For the base 5, since it appears 2 times, we can express it as \( 5^2 \).
- For the base 7, since it appears 3 times, we can express it as \( 7^3 \).

4. **Combine the Exponential Forms**:
Now, we can combine these two exponential forms into one expression:
\[ 5^2 \times 7^3 \]

### Final Answer:
Thus, the expression `5xx5xx7xx7xx7` in exponential form is:
\[ 5^2 \times 7^3 \]

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