In which step did Tyrianne make an error?

1

(x+4) 2 - 3 = 29

There isn't really an error noticeable, because steps are listed. However, x = 11.5

Step-by-step explanation:

Work the problem in reverse

(x+4) 2 - 3 = 29

+3 + 3

(x+4) 2 = 31

2x + 8 = 31

-8 - 8

2x = 23

x = 11.5