Find the Sum or Difference $$( 6 - 9 i ) + ( 3 + 6 i )$$

question 79

Multiple Choice

Find the sum or difference. Write the answer in standard form.
- $$( 6 - 9 i ) + ( 3 + 6 i )$$

• A) \(- 9 + 3 i\)
• B) \(3 + 15 i\)
• C) \(9 - 3 \mathrm { i }\)
• D) \(9 + 3 \mathrm { i }\)

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