Question

which expression is equal to (-3 - i) + (5 + 6i)?
7
-4 + 11i
2 + 5i
-7

Explanation:

Step1: Combine real - parts

Combine the real parts of the complex numbers: $-3 + 5=2$.

Step2: Combine imaginary - parts

Combine the imaginary parts of the complex numbers: $-i+6i = 5i$.

Step3: Write the result

The sum of the two complex numbers is $2 + 5i$.

Answer:

$2 + 5i$