What will come in place of question mark (?) .
`(4.4xx4.4-2.2xx2.2)/(4.4-2.2) = ?`

Options

A. 2.2
B. 4.4
C. 6.6
D. 5.5

Answer

To solve the expression \((4.4 \times 4.4 - 2.2 \times 2.2) / (4.4 - 2.2)\), we can follow these steps:

### Step-by-Step Solution:

1. **Rewrite the expression**:
\[ \frac{4.4 \times 4.4 - 2.2 \times 2.2}{4.4 - 2.2} \]

2. **Recognize the difference of squares**:
The numerator can be expressed as a difference of squares:
\[ a^2 - b^2 = (a - b)(a + b) \]
where \(a = 4.4\) and \(b = 2.2\).

3. **Apply the difference of squares formula**:
Substitute \(a\) and \(b\) into the formula:
\[ 4.4^2 - 2.2^2 = (4.4 - 2.2)(4.4 + 2.2) \]

4. **Substitute back into the expression**:
Now, rewrite the original expression using the difference of squares:
\[ \frac{(4.4 - 2.2)(4.4 + 2.2)}{4.4 - 2.2} \]

5. **Cancel the common terms**:
The \(4.4 - 2.2\) in the numerator and denominator can be canceled:
\[ 4.4 + 2.2 \]

6. **Calculate the remaining expression**:
Now, perform the addition:
\[ 4.4 + 2.2 = 6.6 \]

### Final Answer:
Thus, the value that comes in place of the question mark (?) is:
\[ \boxed{6.6} \]