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Verified Answer :

wormynut

Now, in place of x, you'll have to substitute 3. So,
f(3)=23^2+3
=29+3
=18+3
=21.

gomezmjosemiguel

Answer:

The answer is f(3)=21.

Step-by-step explanation:

To solve this we have to replace the x value in the proposed equation with a value of 3.

\(f(x)=2x^{2} +3\\x=3\\Replacing\\f(3)=2*3^{2} +3\\f(3)=2*9+3\\f(3)=18+3\\f(3)=21\\\)

Having replace the value we have that f(3)=21.

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