lot like variables:
But when you’re multiplying, or raising to a power, don’t forget to take that
extra step of changing i^2 to −1:
Notice that when you raise i to successive powers, a pattern develops:
In Example 3, you’re looking for the square of a complex number.
COMPLEX NUMBERS
A number in the form a + bi, where a and b are real numbers, is called a
complex number.