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Chapter 8: Q. 8.155 (page 837)

Simplify:

(a) 2+7i+4-2i

(b)8-4i-2-i

Short Answer

Expert verified

(a) 6+5i

(b)6-3i

Step by step solution

01

Step 1. Given information.

The following expressions are given:

2+7i+4-2i8-4i-2-i

02

Step 2. Solving Part (a).

Use the associative property to put the real and the imaginary parts together:

2+4+7i-2i

Simplifying

6+5i

03

Step 3. Solving Part (b). 

8-4i-2-i

Distribute:

8-4i-2+i

Use the associative property to put the real and the imaginary parts together

role="math" 8-2+-4i+i

Simplify:

6-3i

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