Answer:
The value of f(x) = [tex]2x^2 + 1[/tex] when x=3 is 19, hence the correct option is ‘d’.
Solution:
A two degree polynomial equation is given in the question.
The equation is:
[tex]F(x)=2 x^{2}+1[/tex]
We need to find the value of f(x) when the value of x is 3.
To solve a question like this we have to substitute the given value of x in the given equation and then simplify it.
Now let's substitute the value of x in the given equation.
[tex]F(x)=2(3)^{2}+1[/tex]
First we square the number 3 and then multiply it with 2 and then add 1.
This is done because of the BODMAS rule, in which multiplication is given higher preference as compared to addition.
On solving the equation we get,
F(x)=2×9+1
F(x)=18+1
F(x)=19.
Therefore the value of f(x) when x=3 is 19.
Hence the correct option is ‘d’.
