Question
Find all complex solutions of the following equation. \( (r-6)^{2}=-5 \) The solution set is \( \} \). (Type an exact answer, using radicals as needed. Express complex numbers of \( i \). Use a comma to separate answers as needed.)
Ask by Zimmerman Hodges. in the United States
Mar 13,2025
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Answer
The solutions are \( r = 6 + i\sqrt{5} \) and \( r = 6 - i\sqrt{5} \).
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To solve the equation \( (r-6)^{2} = -5 \), we first take the square root of both sides. This gives us: \[ r - 6 = \pm \sqrt{-5} \] Since \( \sqrt{-5} = i\sqrt{5} \), we can rewrite it as: \[ r - 6 = \pm i\sqrt{5} \] Next, we solve for \( r \): \[ r = 6 \pm i\sqrt{5} \] Thus, the complex solutions are: \[ \{ 6 + i\sqrt{5}, 6 - i\sqrt{5} \} \]