`2.33xx2.33+0.33xx0.33-0.66xx2.33` is equal to:

Options

A. 2.66
B. 0.4
C. 4
D. 2

Answer

To solve the expression \(2.33 \times 2.33 + 0.33 \times 0.33 - 0.66 \times 2.33\), we can use the algebraic identity for the square of a binomial.

### Step-by-Step Solution:

1. **Identify the terms**:
- Let \(a = 2.33\) and \(b = 0.33\).
- Rewrite the expression:
\[ a^2 + b^2 - 2ab \]

2. **Recognize the formula**:
- The expression \(a^2 + b^2 - 2ab\) can be rewritten using the identity:
\[ (a - b)^2 \]

3. **Substitute the values**:
- Substitute \(a\) and \(b\) into the identity:
\[ (2.33 - 0.33)^2 \]

4. **Calculate \(2.33 - 0.33\)**:
- Perform the subtraction:
\[ 2.33 - 0.33 = 2.00 \]

5. **Square the result**:
- Now calculate the square:
\[ (2.00)^2 = 4.00 \]

6. **Final answer**:
- Therefore, the value of the original expression is:
\[ 4 \]

### Conclusion:
The final answer is \(4\).