186k views
14 votes
Solve pls

for the function -2x²+x+1 find f(3)

User HighKing
by
6.8k points

1 Answer

7 votes

Answer:

f(3) = -14

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) = -2x² + x + 1

f(3) is x = 3

Step 2: Evaluate

  1. Substitute: f(3) = -2(3)² + 3 + 1
  2. Exponents: f(3) = -2(9) + 3 + 1
  3. Multiply: f(3) = -18 + 3 + 1
  4. Add: f(3) = -15 + 1
  5. Add: f(3) = -14
User ParDroid
by
6.3k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.