The sum of the scientific notation is 8.655 * 10^9
<h3>Sum of scientific notation</h3>
The standard form of a scientific notation is expressed as A * 10^n
where
A is any value between 1 and 10
n is any integer
Given the expression below;
(8.42 x 10^9) + (2.35 x 10^8)
This can also be expressed as
(84.2 x 10^8) + (2.35 x 10^8)
(84.2+2.35) * 10^8
86.55 * 10^8
8.655 * 10^9
Hence the sum of the scientific notation is 8.655 * 10^9
Learn more on the sum of the scientific notation here: brainly.com/question/22491567
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