intro
- An imaginary number is any number of the form a + bi, where b ≠ 0.
- Square Root of a Negative Real Number = For any positive real number a, = i.
- A complex number can be written in the form a + bi, where a and b are real numbers, including 0.
- You can use the complex number plane to represent a complex number geometrically.
- The absolute value of a complex number is its distance from the origin on the complex number plane.
- Square Root of a Negative Real Number = For any positive real number a, = i.
- A complex number can be written in the form a + bi, where a and b are real numbers, including 0.
- You can use the complex number plane to represent a complex number geometrically.
- The absolute value of a complex number is its distance from the origin on the complex number plane.
Multiplying Complex Numbers
Find (8i)(-2i)
1. Multiply the real number first. You would get -16i^2.
2. Then substitue in -1 for x^2. It would be -16(-1)
3. Multiply and get 16
1. Multiply the real number first. You would get -16i^2.
2. Then substitue in -1 for x^2. It would be -16(-1)
3. Multiply and get 16