Respuesta :

Space

Answer:

B. 5 + 7i

General Formulas and Concepts:

Pre-Algebra

  • Distributive Property

Algebra I

  • Combining Like Terms

Algebra II

  • Complex Standard Form: a + bi
  • Imaginary Numbers

Step-by-step explanation:

Step 1: Define expression

(8 + 9i) + (5 - 9i) - (8 - 7i)

Step 2: Simplify

  1. Distribute negative:                     8 + 9i + 5 - 9i - 8 + 7i
  2. Combine like terms:                    5 + 7i

Answer:

5+7i

Step-by-step explanation:

A p e x