karynalexalo karynalexalo

19-07-2018
Mathematics

contestada

lf f(x)=5x^3-2 and g(x)=x+1 find (f-g)(x)

A.5x^4-2
B.5x^3-x-1
C. 5x^3-x-3
D. 5x^3+1

Respuesta :

19-07-2018

[tex]f(x)=5x^3-2\\\\g(x)=x+1\\\\(f-g)(x)=f(x)-g(x)=(5x^3-2)-(x+1)=5x^3-2-x-1=5x^3-x-3[/tex]

Answer: C. 5x^3 - x - 3

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