Solve Express Any Nonreal Complex Numbers with I Notation $$x ^ { 4 } - 6 x ^ { 2 } - 27 = 0$$

question 44

Multiple Choice

Solve. Express any nonreal complex numbers with i notation.
- $$x ^ { 4 } - 6 x ^ { 2 } - 27 = 0$$

• A) \(x = \pm 3 , \pm i \sqrt { 3 }\)
• B) \(x = 3 , i \sqrt { 3 }\)
• C) \(x = - 9,3\)
• D) \(x = \pm \sqrt { 3 } , \pm 3 \mathrm { i }\)

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Definitions:

Debit Balance

An excess of debits over credits in a ledger account, typically indicating an increase in assets or expenses.

Posting Error

A mistake made during the process of entering or recording financial transactions in the accounting records.

Written Off

The accounting action of declaring that an asset is no longer useful and its value has become zero, often leading to its removal from the balance sheet.

Allowance Account

A contra-asset account used to create an allowance for doubtful accounts, representing receivables that may not be collected.