Question

For i = −1 , what is the sum (7 + 3i) + (−8 + 9i) ?

Answer 1

hey here is your answer

(7+3i)+(-8+9i) = (7-8)+(3i+9i) = -1+12i.
put the value ( i = -1)
= -1-12
= -13

I hope it will help you

Answer 2

The sum of the expression is -13.

Given:

The expression is (7 + 3i) + (−8 + 9i) and i=-1

To Find:

Sum of the expression

Solution:

(7 + 3i) + (−8 + 9i)

-1+12i

Put the value of i

-1-12=-13

Hence, the sum of the expression is -13.

To learn more about equations visit:https://brainly.in/question/24791936

#SPJ3