Maths-
General
Easy
Question
What is the sum of the complex numbers 6 + 5i and 8 + 3i2?
- 11 + 5i
- 14 − 2i
- 14 + 8i3
- 17 + 5i
The correct answer is: 11 + 5i
Hint:
Concept in this question is sum of complex numbers.
Complex number consist of real part and imaginary part. I. e A + bi where A is real part and bi is imaginary part
In addition of complex number do addition of real part and imaginary part separately.
Step by step explanation:
Given:
Two complex numbers: 6 + 5i and 8 + 3i2
Step 1:
Put, i2 = - 1
so, 8 + 3i2 will become
⇒ 8 + 3 (- 1)
⇒ 8 - 3
⇒ 5
Step 2:
Separate real and imaginary part.
(6 + 5i) + (5)
⇒ (6 + 5) + 5i
Step 3:
Now do the simple addition.
⇒ 11 + 5i
Hence, the answer is 11 + 5i.
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