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IgorC [24]
3 years ago
8

Which expression is equal to (f - g)(x)?

Mathematics
1 answer:
STALIN [3.7K]3 years ago
4 0

Answer: 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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D=xlx is a whole number)
prohojiy [21]

Answer:

Option (4)

Step-by-step explanation:

D = {x| x is a whole number}

D = {1, 2, 3, 4..........}

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E = {4}

F = {x | x is an even number greater than 2 and less than 9}

F = {2, 4, 6, 8}

(E ∩ F) = Set of common numbers of E and F

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Therefore, Option (4) will be the answer.

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