Answer:
23
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Algebra I
Explanation:
Step 1: Define
g(x) = x² - 4
f(x) = -2x - 3
g(-6) is x = -6 for function g(x)
f(-6) is x = -6 for function f(x)
Step 2: Evaluate
g(-6)
- Substitute in x: g(-6) = (-6)² - 4
- Exponents: g(-6) = 36 - 4
- Subtract: g(-6) = 32
f(-6)
- Substitute in x: f(-6) = -2(-6) - 3
- Multiply: f(-6) = 12 - 3
- Subtract: f(-6) = 9
g(-6) - f(-6)
- Substitute: 32 - 9
- Subtract: 23