SOLUTION: Solve (u+9)^2-16=0 where u is a real number. Simply your answer as much as possible.

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Question 185734: Solve (u+9)^2-16=0 where u is a real number. Simply your answer as much as possible.
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
(u+9)^2-16=0
Adding 16 to both sides:
(u+9)^2 = 16
Taking the square root of both sides:
u+9 = +- 4
.
Consider +4:
u+9 = +4
u = -5
.
Consider -4:
u+9 = -4
u = -13
.
u = {-5, -13}