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Evaluate the function below for X=3:
2x^3 - x^2 - 4x + 9
A. 9
B. 42
C. 60
D. 204

Sagot :

Space

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
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