Find the Sum or Difference $\mathrm { i } \sqrt { 5 } + 1 - ( 7 + 8 \mathrm { i } \sqrt { 5 } ) - ( 6 - \mathrm { i } \sqrt { 5 } )$

question 110

Multiple Choice

Find the sum or difference. Write the answer in standard form.
- $\mathrm { i } \sqrt { 5 } + 1 - ( 7 + 8 \mathrm { i } \sqrt { 5 } ) - ( 6 - \mathrm { i } \sqrt { 5 } )$

• A) \(12 - 10 \mathrm { i } \sqrt { 5 }\)
• B) \(- 12 - 6 i \sqrt { 5 }\)
• C) \(- 12 + 6 i \sqrt { 5 }\)
• D) \(- 12 - 10 \mathrm { i } \sqrt { 5 }\)

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