Subtract. Write your answer in scientific notation. (1.3 × 10⁶) – (9.72 × 10⁵)

To subtract the numbers in scientific notation, we first need to ensure they have the same exponent.

1. Convert (9.72 times 10^5) to the same exponent as (1.3 times 10^6):

[

9.72 times 10^5 = 0.972 times 10^6

]

2. Now, we can perform the subtraction:

[

(1.3 times 10^6) – (0.972 times 10^6) = (1.3 – 0.972) times 10^6

]

3. Calculate the subtraction:

[

1.3 – 0.972 = 0.328

]

4. Write the result in scientific notation:

[

0.328 times 10^6 = 3.28 times 10^5

]

So, the correct answer is (3.28 times 10^5).