Adding Complex Numbers: (-4 + 2i) + (6 - 3i)
This article will demonstrate how to add two complex numbers: (-4 + 2i) + (6 - 3i).
Understanding Complex Numbers
Complex numbers are numbers that consist of two parts: a real part and an imaginary part. They are typically written in the form a + bi, where:
- a is the real part (a real number)
- b is the imaginary part (a real number)
- i is the imaginary unit, defined as the square root of -1 (i² = -1)
Adding Complex Numbers
To add complex numbers, we simply add the real parts and add the imaginary parts separately.
Step 1: Separate the real and imaginary parts
- (-4 + 2i) has a real part of -4 and an imaginary part of 2.
- (6 - 3i) has a real part of 6 and an imaginary part of -3.
Step 2: Add the real parts and the imaginary parts
- Real part: -4 + 6 = 2
- Imaginary part: 2 + (-3) = -1
Step 3: Combine the results
The sum of (-4 + 2i) + (6 - 3i) is 2 - i.
Conclusion
Adding complex numbers is straightforward. We simply combine the real and imaginary components separately. In the case of (-4 + 2i) + (6 - 3i), the sum is 2 - i.