destinyyoung315 destinyyoung315

01-02-2020
Mathematics

contestada

For f(x) = 3x+ 1 and g(x) = x2 - 6, find (f+g)(x).
O A. 3x3 - 5
O B. x+3x-5
O c. x+3x+7
O D. 3x - 17
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Respuesta :

01-02-2020

Answer:

B. x² + 3x - 5

Step-by-step explanation:

[tex](f+g)(x)=f(x)+g(x)\\\\\text{Substitute}\ f(x)=3x+1,\ g(x)=x^2-6:\\\\(f+g)(x)=(3x+1)+(x^2-6)\qquad\text{combine like terms}\\\\(f+g)(x)=x^2+3x+(1-6)\\\\(f+g)(x)=x^2+3x-5[/tex]

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alexandriagregan alexandriagregan

01-02-2020

your answer would be option B. x+3x-5

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