**Subtract: (28a2-10) - (ба² - 26+6)**

A. 28a2+5a²-26-10+6

B. 28a5a²-26-10+6

C. 28a25a²+26-10-6

D. 28a25a²+26-10+6

Let's subtract the expressions: \((28a^2 - 10) - (5a^2 - 26 + 6)\).

### Step-by-step solution:

1. Distribute the negative sign across the second expression:
   \[
   (28a^2 - 10) - (5a^2 - 26 + 6) = 28a^2 - 10 - 5a^2 + 26 - 6
   \]

2. Simplify the expression by combining like terms:
   - Combine the \(a^2\) terms: \(28a^2 - 5a^2 = 23a^2\)
   - Combine the constants: \(-10 + 26 - 6 = 10\)

3. The simplified expression is:
   \[
   23a^2 + 10
   \]

### Now, let's compare with the options:

- **A**: \(28a^2 + 5a^2 - 26 - 10 + 6\) (incorrect)
- **B**: \(28a5a^2 - 26 - 10 + 6\) (incorrect)
- **C**: \(28a25a^2 + 26 - 10 - 6\) (incorrect)
- **D**: \(28a25a^2 + 26 - 10 + 6\) (incorrect)

None of the given options matches the correct result, \(23a^2 + 10\).

Would you like further details, or to ask additional questions?

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**Related Questions:**
1. How do you distribute a negative sign in subtraction problems like this one?
2. What are the steps to combine like terms effectively?
3. Can subtraction of polynomials result in eliminating certain variables completely?
4. How does subtracting constants from an expression affect its overall result?
5. What other operations can be combined with subtraction in polynomial equations?

**Tip:** Always distribute the negative sign carefully across all terms in parentheses to avoid mistakes.

Explore the subtraction and simplification of polynomials with a detailed step-by-step solution for the expression (28a^2 - 10) - (5a^2 - 26 + 6). Learn key algebraic concepts such as the distributive property and combining like terms, suitable for students in Grades 8-10.

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