For this case we have the following expression:
[tex]2x ^ 2 + 2x ^ 3[/tex]
The terms are not similar, so they cannot be added.
Examples of similar terms:
[tex]x ^ 3 + x ^ 3 = 2x ^ 3\\3x ^ 4 + 2x ^ 4 = 5x ^ 4[/tex]
Then, the expression given can only be rewritten as:
[tex]2 (x ^ 2 + x ^ 3)[/tex]
This is taking common factor 2 to both terms.
Answer:
[tex]2 (x ^ 2 + x ^ 3)[/tex]
