Solved

Find the Sum or Difference $( - 1 + 9 i ) - ( 6 + 5 i ) - ( - 3 + 7 i )$

Question 98

Multiple Choice

Find the sum or difference. Write the answer in standard form.
- $( - 1 + 9 i ) - ( 6 + 5 i ) - ( - 3 + 7 i )$

A) $- 4 + 21 \mathrm { i }$
B) $2 + 21 \mathrm { i }$
C) $- 4 - 3 \mathrm { i }$
D) $- 10 + 11 \mathrm { i }$

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