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givi [52]
3 years ago
10

I have to find f(3)

Mathematics
2 answers:
enot [183]3 years ago
8 0

Answer:

f(3)=21

Step-by-step explanation:

this is quite simple. To start off the equation is

f\left(x\right)=2x^2+x

All you do now is just plug 3 into x because you are trying to find f(3).

f\left(3\right)=2\left(3\right)^2+3

after that you simplify it to

f\left(3\right)=2\left(9\right)+3

Then you multiply.

f\left(3\right)=18+3

after that, the final step is just to add :)

f\left(3\right)=21

therefore, the final answer is:

f\left(3\right)=21

I hope this helps!

crimeas [40]3 years ago
4 0

Answer:

Step-by-step explanation:

plug 3 into x

2(3)^2+(3)

2(9)+3

18+3

21

f(3)=21

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