Answer:

General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Algebra II
- Distance Formula:

Explanation:
Step 1: Define
Point A (-2, 1)
Point B (1, -1)
Step 2: Find distance d
- Substitute:

- Add/Subtract:

- Exponents:

- Add:
