Presentation on theme: "Complex Numbers – Add, Subtract, Multiply, and Divide"— Presentation transcript:
1 Complex Numbers – Add, Subtract, Multiply, and Divide Addition of complex numbers is given by:Example 1:
2 It is good to leave out the middle step and to work the problem completely in your head. Example 2:It is perfectly fine to think of addition of complex numbers as adding binomials, but remember that i is not a variable, but an imaginary number.
3 Subtraction of complex numbers is given by: Example 3:
4 Again, not all the steps were necessary, and learning to work the problem quickly in your head is good.Example 4:
5 Multiplication of complex numbers is given by: It is often easier to think of multiplication of complex numbers using the foil pattern for binomials, even though these are numbers and not true binomials. Again, remember that i is not a variable, but an imaginary number