hey!!
here is your answer >>>
Let us group them,
we get,
The groups are =
(X3 and 8x^2 ) ( 6x and 48)
Now, let's take common in these numbers!. We get,
X^2 ( X + 8) + 6(X + 8) !.
X+8 is common!.
so, it will become ,
(X^2+6)(X+8).
Hope my answer helps!