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06-12-2020
Mathematics

contestada

let f(x) =x+5 and g(x)=x^2-3 then f(g(x)) =?

(a)x^2 + 2
(b)x^2 - 2
(c)x^2+1
(d)2x^2 + 2

Respuesta :

absor201 absor201

06-12-2020

Answer:

Option (a) is true.

Step-by-step explanation:

Given the function

[tex]f(x)=x+5[/tex]

[tex]g\left(x\right)=x^2-3[/tex]

(f∘g)(x) = f(g(x)) = f(x²-3) = (x²-3)+5

= x² + 2

Thus,

f(g(x)) = x² + 2

Therefore, option (a) is true.

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