Question

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

Answer 1

Answer:

5 - 3i.

Step-by-step explanation:

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

= 2 + 3 + 4i - 71

= 5 - 3i.

Answer 2

Answer:

5 - 3i

Step-by-step 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:

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