Question

Evaluate the function below for X=3:

Answer 1

Answer:

42

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

Step-by-step explanation:

Step 1: Define

2x³ - x² - 4x + 9

x = 3

Step 2: Evaluate

1. Substitute in x:                    2(3)³ - 3² - 4(3) + 9
2. Exponents:                          2(27) - 9 - 12 + 9
3. Multiply:                               54 - 9 - 12 + 9
4. Subtract:                              45 - 12 + 9
5. Subtract:                              33 + 9
6. Add:                                     42