2.2 x 10^5 + 3.7 x 10^5

To add the numbers \(2.2 \times 10^5\) and \(3.7 \times 10^5\), you can first rewrite them using the same powers of 10:

\[ (2.2 + 3.7) \times 10^5 \]

Now, perform the addition:

\[ 2.2 + 3.7 = 5.9 \]

So, the result is:

\[ 5.9 \times 10^5 \]

Thus, \(2.2 \times 10^5 + 3.7 \times 10^5 = 5.9 \times 10^5\).