Express `(2.2xx10^(4))xx(3.3xx10^(5))` in scientific notation.

Answer

To express \( (2.2 \times 10^4) \times (3.3 \times 10^5) \) in scientific notation, we can follow these steps:

### Step 1: Multiply the coefficients
First, we need to multiply the coefficients (the numbers in front of the powers of ten):
\[ 2.2 \times 3.3 \]

Calculating this gives:
\[ 2.2 \times 3.3 = 7.26 \]

### Step 2: Add the exponents
Next, we add the exponents of the powers of ten:
\[ 10^4 \times 10^5 = 10^{(4 + 5)} = 10^9 \]

### Step 3: Combine the results
Now we combine the results from Steps 1 and 2:
\[ 7.26 \times 10^9 \]

### Step 4: Check if in scientific notation
In scientific notation, we need to ensure that there is only one non-zero digit to the left of the decimal point. In this case, \(7.26\) already meets this criterion, as \(7\) is a non-zero digit.

### Final Answer
Thus, the expression \( (2.2 \times 10^4) \times (3.3 \times 10^5) \) in scientific notation is:
\[ 7.26 \times 10^9 \]

---