Adding Complex Numbers: (5 + 7i) + (-2 + 6i)
This article will explain how to add the complex numbers (5 + 7i) and (-2 + 6i).
Understanding Complex Numbers
Complex numbers are numbers that can be expressed in the form a + bi, where:
- a and b are real numbers
- 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 the imaginary parts separately.
Step 1: Identify the real and imaginary parts of each number.
- (5 + 7i) has a real part of 5 and an imaginary part of 7.
- (-2 + 6i) has a real part of -2 and an imaginary part of 6.
Step 2: Add the real parts together.
- 5 + (-2) = 3
Step 3: Add the imaginary parts together.
- 7 + 6 = 13
Step 4: Combine the results.
- The sum of the real parts is 3.
- The sum of the imaginary parts is 13.
Therefore, (5 + 7i) + (-2 + 6i) = 3 + 13i