Adding Complex Numbers: (-4 + 7i) + (-3 - 8i)
This article will guide you through the process of adding two complex numbers: (-4 + 7i) and (-3 - 8i).
Understanding Complex Numbers
Complex numbers are expressed in the form a + bi, where:
- a represents the real part.
- b represents the imaginary part.
- i is the imaginary unit, where i² = -1.
Adding Complex Numbers
Adding complex numbers is straightforward. We simply add the real parts and the imaginary parts separately.
Step 1: Identify the real and imaginary parts of each complex number.
- (-4 + 7i): Real part = -4, Imaginary part = 7
- (-3 - 8i): Real part = -3, Imaginary part = -8
Step 2: Add the real parts together.
- -4 + (-3) = -7
Step 3: Add the imaginary parts together.
- 7 + (-8) = -1
Step 4: Combine the results to form the sum of the complex numbers.
- (-4 + 7i) + (-3 - 8i) = -7 - i
Conclusion
Therefore, the sum of the complex numbers (-4 + 7i) and (-3 - 8i) is -7 - i.