Noah and Audrey are simplifying the expression 5x-4+x+2, whos is wrong and why;
Noah: 5x - 4 + x + 2 = 5x - 2
Audrey: 5x - 4 + x + 2 = 6x - 2
Also write an Expression that contains three terms that is in simplest form. one of the terms should be a constant