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kayleerose414

21.05.2023

Mathematics

Option D

(f-g)(x) = 7x^2 -2x -5

Step-by-step explanation:

We have two functions:

$f (x) = 7x ^ 2 +4\\\\g (x) = 2x + 9$

We must find (f-g)(x)

Then we must subtract the function f and the function g.

Therefore we have that:

$(f-g) (x) = f (x) -g (x)\\\\(f-g) (x) = 7x ^ 2 +4 - (2x + 9)\\\\(f-g) (x) = 7x ^ 2 -2x -5$

Therefore the correct option is the last option (Option D) (f-g)(x) = 7x^2 -2x -5

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