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Algebra
Question

Solve \( ( u + 9 ) ^ { 2 } - 72 = 0 , \) where \( ...

Solve \( ( u + 9 ) ^ { 2 } - 72 = 0 , \) where \( u \) is a real number.  

Simplify your answer as much as possible.  

If there is more than one solution, separate them with commas.  

If there is no solution, tap "No solution." 

Answer

u = 6\(\sqrt{2}\) - 9

u = -6\(\sqrt{2}\) - 9

Solution
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