Question

Quick help...



Consider the function f(x) = x2 − 2x + 6. Find the value of f(x) when x = 3 and select the correct answer below.


1
3
6
9

Answer 1

Plug in x

Answer 2

All you need to do is plug 3 in wherever you see an x and then solve. Does that clear it up?

Answer 3

\(f(3) = (3)^2-2(3)+6\)

Answer 4

it's 9, right?

Answer 5

For example, if I needed to find the value of f(x) when x=4,
THEN this is what I would do:

\(\large\color{black}{ \displaystyle f(x)=x^2-2x+6 }\)
\(\large\color{black}{ \displaystyle f(\color{red}{4})=\color{red}{(4)}^2-2\color{red}{(4})+6 }\)
\(\large\color{black}{ \displaystyle f(\color{red}{4})=16-8+6 }\)
\(\large\color{black}{ \displaystyle f(\color{red}{4})=14 }\)
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Yes, 9 is right for x=3

Answer 6

Yep, it is 9 =)

Answer 7

Duh! Lol, Thx guys! :D

Answer 8

Anytime....