$6.
You can get this by dividing the original number by 3 and then the new answer by 2.
Hi!
I can help you with joy!
Evaluate:
when 
First, add x's:

Now, plug in the value of x (3)

Multiply:`
(Answer)
Hope it helps!
Ask me if you have any doubts.
<em>Answered by</em>
<em>~</em>Silent~
8x^5\left(32\sqrt{2}x^2-\sqrt{2}x^4\right)
3.625 is the answer. Enjoy!