### Home > CCA2 > Chapter 8 > Lesson 8.2.1 > Problem8-70

8-70.
1. Write each of the following expressions in the form a + bi. Homework Help ✎

1. −18 −

2. 5 +

$-18 - \sqrt{(-1)(25)}$

$-18 - 5i$

$1 \pm 2i$

$5 + i\sqrt{6}$