Question

What is the sum of the complex numbers 2 + 4i,and 3 − 7i, where i=-1

Answer 1

5 - 3i

Explanation:

Real numbers are a subset of the complex numbers. Therefore it would only make sense that the complex numbers follow the same rule of additivity and multiplication as real numbers do:

`(2+4i)+(3-7i)=2+3+4i-7i=5-3i`

Answer 2

5 - 3i.

Explanation:

2 + 4i + 3 - 7i Bring like terms together:

= 2 + 3 + 4i - 71

= 5 - 3i.