19x³ + (14x + 4x³)= You can assume that there is a 1 in front of the parentheses, so you can distribute the one to each term in the parentheses. 19x³ + 1(14x+4x³)= 19x³ + 14x + 4x³= Then combine like terms to get 23x³ + 14x. So 19x³ + 14x + 4x³= 23x³ + 14x
