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f(x)=5x2−3x−1 and g(x)=2x2−x+3
f(x)+g(x)=
Question 18 options:

3x2−4x−4

3x2−2x−4

7x2+4x+3

7x2−4x+2

Respuesta :

Space

Answer:

f(x) + g(x) = 7x² - 4x + 2

General Formulas and Concepts:

Algebra I

  • Combining Like Terms

Step-by-step explanation:

Step 1: Define

f(x) = 5x² - 3x - 1

g(x) = 2x² - x + 3

Step 2: Find f(x) + g(x)

  1. Substitute:                                f(x) + g(x) = 5x² - 3x - 1 + 2x² - x + 3
  2. Combine like terms (x²):          f(x) + g(x) = 7x² - 3x - 1 - x + 3
  3. Combine like terms (x):            f(x) + g(x) = 7x² - 4x - 1 + 3
  4. Combine like terms (Z):           f(x) + g(x) = 7x² - 4x + 2

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