First Complex Number

a + bi

Second Complex Number

c + di

What is Adding Complex Numbers Calculator?

An Adding Complex Numbers Calculator is a mathematical tool that performs addition operations on complex numbers. Complex numbers are numbers that consist of a real part and an imaginary part, typically written in the form a + bi, where 'a' is the real part, 'b' is the imaginary part, and 'i' is the imaginary unit.

To add complex numbers, you simply add the real parts together and add the imaginary parts together separately. For example, (3 + 4i) + (2 + 5i) = (3 + 2) + (4 + 5)i = 5 + 9i.

Complex number addition is fundamental in advanced mathematics, electrical engineering, quantum physics, and signal processing applications.

How It Works

1

Identify Parts

Separate real and imaginary components

2

Add Real Parts

Combine a + c

3

Add Imaginary

Combine b + d

(a+c)+(b+d)i
Final result

Common Examples

(2+3i) + (4+5i)
Real: 2+4=6, Imag: 3+5=8 → 6+8i
(1-2i) + (-3+4i)
Real: 1-3=-2, Imag: -2+4=2 → -2+2i
(5+0i) + (0-7i)
Real: 5+0=5, Imag: 0-7=-7 → 5-7i
(-1+i) + (1-i)
Real: -1+1=0, Imag: 1-1=0 → 0+0i
(0+3i) + (7+0i)
Real: 0+7=7, Imag: 3+0=3 → 7+3i
(6-4i) + (-2+9i)
Real: 6-2=4, Imag: -4+9=5 → 4+5i
(a+bi) + (c+di) = (a+c) + (b+d)i
Complex number addition formula

Complex Numbers Calculator

🔢

What

Add complex numbers by combining real and imaginary parts separately.

🎯

Why

Essential for advanced mathematics, engineering, and physics calculations.

Applications

Electrical engineering, quantum mechanics, signal processing, and control systems.

📊 Calculation Examples

(8+6i) + (3-2i)
Step 1:Identify parts
Real:8 + 3 = 11
Imaginary:6 + (-2) = 4
Final Result: 11 + 4i
(-5+7i) + (2-3i)
Step 1:Separate components
Real:-5 + 2 = -3
Imaginary:7 + (-3) = 4
Final Result: -3 + 4i
(4+0i) + (0+9i)
Step 1:Pure real + pure imaginary
Real:4 + 0 = 4
Imaginary:0 + 9 = 9
Final Result: 4 + 9i

Frequently Asked Questions

1

What is the formula for adding complex numbers?

The formula is (a+bi) + (c+di) = (a+c) + (b+d)i. Add real parts separately from imaginary parts.

2

Can you add complex numbers with different signs?

Yes, treat negative signs as subtraction. For example: (3+4i) + (2-5i) = (3+2) + (4-5)i = 5-i.

3

What happens when adding pure real and pure imaginary numbers?

Pure real (a+0i) plus pure imaginary (0+bi) gives a+bi. The parts don't interact, just combine.

4

Is complex number addition commutative?

Yes, (a+bi) + (c+di) = (c+di) + (a+bi). Order doesn't matter in complex addition.

5

What is the additive identity for complex numbers?

The additive identity is 0+0i (or just 0). Adding this to any complex number leaves it unchanged.

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