28) y + 2y + 1 + y + 2y + 1
29) y^2 + 4y + 2
30) The two expressions are equal because its the same question written in two different forms, one of the expression is written in an unsmplified form and the other expression is the simplified form.
= y + y = y^2
= 2y + 2y = 4y
= 1 + 1 = 2
= y^2 + 4y + 2
I haven't done this in a long time so I'm sorry if it's wrong
