Complex numbers Review
What are complex numbers?
A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i has a value of √-1. Because no real number satisfies √-1, i is called an imaginary number. For the complex number a + bi, a is called the real part, and b is called the imaginary part.
what are the values of i and i²?
How to add or subtract complex numbers?
Add like terms
How to multiply complex numbers.
To multiple complex numbers, multiply like you normally would, but substitute -1 for i²
How to divide complex numbers.
multiply the the denominator and numerator of the quotient by the conjugate of the denominator, then simplify.