Question

Evaluate f(x) = x2 – 12 when x = 5

Answer 1

13

Explanation:

replace the x with 5.

5^2-12=

25-12=13

Answer 2

f(5) = 13

General Formulas and Concepts:

Pre-Algebra

• Order of Operations: BPEMDAS

Algebra I

• Function notation and substitution

Explanation:

Step 1: Define

f(x) = x² - 12

x = 5

Step 2: Evaluate

1. Substitute: f(5) = 5² - 12
2. Exponents: f(5) = 25 - 12
3. Subtract: f(5) = 13