Question

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If f(x)=3x^2-7x find f(-2)

Answer 1

f(-2) = 26

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Algebra I

• Function Notation

Explanation:

Step 1: Define

f(x) = 3x² - 7x

f(-2) is x = -2

Step 2: Evaluate

1. Substitute in x: f(-2) = 3(-2)² - 7(-2)
2. Exponents: f(-2) = 3(4) - 7(-2)
3. Multiply: f(-2) = 12 + 14
4. Add: f(-2) = 26