Questions: Subtract (-12+5i)-(-16-17i)= If the answer is radical use sqrt(5) to denote √5 (use the correct r If the answer is complex use i to denote i.
Transcript text: Subtract $(-12+5 i)-(-16-17 i)=$ $\square$ If the answer is radical use sqrt(5) to denote $\sqrt{5}$ (use the correct $r$ If the answer is complex use $i$ to denote $i$.
Solution
Solution Steps
To subtract two complex numbers, we need to subtract their real parts and their imaginary parts separately.
Solution Approach
Identify the real and imaginary parts of each complex number.
Subtract the real parts.
Subtract the imaginary parts.
Combine the results to form the final complex number.
Step 1: Identify the Complex Numbers
Given the complex numbers:
\( z_1 = -12 + 5i \)
\( z_2 = -16 - 17i \)
Step 2: Subtract the Real Parts
Subtract the real parts of \( z_1 \) and \( z_2 \):
\[ -12 - (-16) = -12 + 16 = 4 \]
Step 3: Subtract the Imaginary Parts
Subtract the imaginary parts of \( z_1 \) and \( z_2 \):
\[ 5 - (-17) = 5 + 17 = 22 \]
Step 4: Combine the Results
Combine the results to form the final complex number:
\[ 4 + 22i \]