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Performing Arithmetic with Complex Numbers

Performing Arithmetic with Complex Numbers 1.20 - Solution

arrow_back Return to Performing Arithmetic with Complex Numbers
a
When calculating with complex numbers, we add and subtract the real and imaginary parts separately. Let's insert our values and do just that.
The sum of the three complex numbers is, therefore,
b
When we multiply a complex number by we multiply both the real part and the imaginary part.
c
In the same way as previously, take the product of the complex numbers and then add and subtract the real and imaginary parts separately.
The imaginary parts canceled each other out, and what was left was only the real number