How well this be in scientific notation?

The first step to finding your answer is to remove the first set of parenthesis.
3 x  x ( 2 x  )
Then remove the second set of parenthesis.
3 x  x 2 x  
Now multiply 3 and 2 together
6 x x  
In order to multiply terms with the same base,, you must instead just add their exponents together. This will look like the following:
6 x 
This means that the answer to your question will be 6 x  when put in scientific notation.
Let me know if you have any further questions
:)