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