Question

Find the sum of -2 + i and its complex conjugate. Write your answer in the form a + bi.

Answer 1

Answer:

- 4

Step-by-step explanation:

The conjugate of - 2 + i is - 2 - i, thus

- 2 + i + (- 2) - i

= - 2 + i - 2 - i ← collect like terms

= - 4 ← in the form a + bi with b = 0