Perform the Indicated Operation and Simplify $a + bi$ - $\sqrt { - 81 }$

question 44

Multiple Choice

Perform the indicated operation and simplify. Write the result in the form a $a + bi$
- $\sqrt { - 81 }$

• A) \(0 + 9 \mathrm { i }\)
• B) \(9 + 0 \mathrm { i }\)
• C) \(0 - 9 \mathrm { i }\)
• D) \(0 - \mathrm { i } \sqrt { 9 }\)

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