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Home > PC > Chapter 11 > Lesson 11.1.2 > Problem 11-26

11-26.
  1. Given i = square root of negative one and i2 = −1, simplify the following expressions. Write your answers in a + bi form. Homework Help ✎

    1. 3i(2 + 4i)

    2. (5i)2

    3. (2 + i)(2 − i)

    4. (3 − 2i)(4 + i)

    5. (4 − 5i)2

6i + 12i2

5i · 5i

4 − i2

12 + 3i − 8i − 2i2

(4 − 5i)(4 − 5i)