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Complex and Imaginary Numbers

Q: What is a complex number?

A: A complex number is a number that contains the imaginary number i.

8 + 2i is a complex number. It has a real part 8, and an imaginary part 2i.

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Q: What is an imaginary number?

A: is the imaginary number that somebody created when they . . . → Read More: Complex and Imaginary Numbers

Adding and Subtracting Complex Numbers

Add or Subtract: a) b) c)

a)

b)

c)

Multiplying Complex Numbers

Multiply: a) b) c)

a)

b) Use F.O.I.L. (First Outside Inside Last) = = Recall that = = =

c) Again, we will use F.O.I.L.: = = = = = . . . → Read More: Multiplying Complex Numbers