Solved

Find the Sum or Difference $( 1 + 3 i ) - ( - 3 - 8 i ) + ( 9 - 9 i )$

Question 473

Multiple Choice

Find the sum or difference. Write the answer in standard form.
- $( 1 + 3 i ) - ( - 3 - 8 i ) + ( 9 - 9 i )$

A) $- 13 + 20 \mathrm { i }$
B) $13 + 2 \mathrm { i }$
C) $7 - 14 \mathrm { i }$
D) $13 - 14 \mathrm { i }$

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