Answer: x^3 + 9x^2 + 27x + 27, your second choice
Step-by-step explanation: you multiply everything with ^3, since you don't know x, you keep it as x^3. You get 9x^x with 3 + x, 3x, then ^3, which makes it 9x^2. You then do 3 ^3 and get 27, then add x. So 27x, lastly, you do 3 x ^3, and get 27
Hope this helped
