7. Subtract $$ -5-2 a $$ from $$ \left(a^{2}-5 a\right) $$

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To subtract $$ -5 - 2a $$ from $$ a^{2} - 5a $$, follow these steps:

1. **Set Up the Expression:**
   $$
   (a^{2} - 5a) - (-5 - 2a)
   $$

2. **Distribute the Negative Sign:**
   Subtracting a negative is the same as adding its positive counterpart.
   $$
   a^{2} - 5a + 5 + 2a
   $$

3. **Combine Like Terms:**
   - Combine the $$ a $$ terms:
     $$
     -5a + 2a = -3a
     $$
   - The constants and the $$ a^{2} $$ term remain unchanged.

4. **Write the Final Expression:**
   $$
   a^{2} - 3a + 5
   $$

**Final Answer:**  
$$ a^{2} - 3a + 5 $$
$$ a^{2} - 3a + 5 $$

7. Subtract \( -5-2 a \) from \( \left(a^{2}-5 a\right) \)

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