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1 year ago

Let f(x) = 3x² + 1 and g(x) = x +4. Find (f +g)(x) and (f -g)(x).

Mathematics

1 answer:

Artist 52 [7]1 year ago

6 0

Answer:

(f + g)(x) = 3x² + x + 5

(f - g)(x) = 3x² - x - 3

Step-by-step explanation:

(f + g)(x) → f(x) + g(x) → 3x² + 1 + x + 4

Combine like terms and you get: 3x² + x + 5

(f - g)(x) → f(x) - g(x) → 3x² + 1 - (x + 4)

Remember to distribute the neg. everything in the parentheses. Combine like terms and you get: 3x² - x - 3

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