Question

If P(x) = x² + x + 2, find P(7).
P(7)=

Answer 1

P(7) = 58

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

• Functions
• Function Notation

Explanation:

Step 1: Define

P(x) = x² + x + 2

P(7) is x = 7

Step 2: Evaluate

1. Substitute in x [Function]: P(7) = 7² + 7 + 2
2. [Output] Exponents: P(7) = 49 + 7 + 2
3. [Output] Addition: P(7) = 56 + 2
4. [Output] Addition: P(7) = 58