5.3: Complex Numbers

• 5.3.1: Imaginary Numbers

• 5.3.2: The Complex Numbers

• 5.3.3: Quadratic Formula and Complex Sums

• 5.3.4: Products and Quotients of Complex Numbers

• 5.3.5: Product and Quotient Theorems

  Simplified way to multiply and divide complex numbers.

• 5.3.6: Trigonometric Form of Complex Numbers

  x plus y times i equals r times the sum of cosine theta and i times sine theta.