Find the sum or difference. Write the answer in standard form.
-$$( 5 + 4 i ) - ( - 4 + i )$$
A) $- 9 - 3 i$
B) $9 - 3 \mathrm { i }$
C) $9 + 3 \mathrm { i }$
D) $1 + 5 i$

Name: Find the sum or difference. Write the answer in standard form. -\[( 5 + 4 i ) - ( - 4 + i )\] A) $- 9 - 3 i$ B) $9 - 3 \mathrm { i }$ C) $9 + 3 \mathrm { i }$ D) $1 + 5 i$
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Question

Quizplus · Accepted Answer

To find the sum or difference, combine like terms: $(5 + 4i) - (-4 + i) = 5 + 4i + 4 - i = 9 + 3i$.

Find the Sum or Difference (5+4i)−(−4+i)( 5 + 4 i ) - ( - 4 + i )(5+4i)−(−4+i)

Find the Sum or Difference $( 5 + 4 i ) - ( - 4 + i )$