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Alenkinab [10]
3 years ago
7

PLEASE HELP ITS A FUNCTION

Mathematics
1 answer:
Agata [3.3K]3 years ago
5 0

f(3) is equal to 23.


In order to solve for f(3), you must put 3 in for all values of x. This is what the notation of the 3 being in parenthesis means. So we take the original and place 3 in every time we see x.


f(x) = 2x^{2}  + 5 \sqrt{x - 2}

f(3) = 2(3)^{2}  + 5 \sqrt{(3) - 2}

f(3) = 2(9) + 5 \sqrt{1}

f(3) = 18 + 5(1)

f(3) = 18 + 5

f(3) = 23

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4 years ago
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Answer:

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Step-by-step explanation:

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A tip you can use to avoid Foil is this mental math trick: (Keep in mind this only works if the polynomial is being squared.)

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prohojiy [21]

Answer:

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