Respuesta :

(x+3)(x^2 + 5x +1) is the questions

= x^3 +5x^2+x+3x^2+15x+3.
We get this by using the distributive property.

= x^3+8x^2+16x+3
Simplify


So the answer is 
x^3+8x^2+16x+3



Hope this helps. If you have any questions, please put them in the comments below.
The answer would be x^3+8x^2+16+3. Hope that helps if even the tiniest bit <3