Find the Sum or Difference $i \sqrt { 7 } + 9 - ( 4 + 7 i \sqrt { 7 } ) - ( 9 - i \sqrt { 7 } )$

question 303

Multiple Choice

Find the sum or difference. Write the answer in standard form.
- $i \sqrt { 7 } + 9 - ( 4 + 7 i \sqrt { 7 } ) - ( 9 - i \sqrt { 7 } )$

• A) \(- 4 - 9 i \sqrt { 7 }\)
• B) \(4 - 9 i \sqrt { 7 }\)
• C) \(- 4 + 5 i \sqrt { 7 }\)
• D) \(- 4 - 5 i \sqrt { 7 }\)

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