Use the distributive property twice to expand (x+8) (x+3)

Foil method is called.

x^2+11x+24

Example:

(3x+8) (2x + 6)

6x^2+18x+16x+42

6x^2+34x+42

using the foil method, you can expand the given expression. It is already in simplified form with the given (3x+8) (2x+6)