Question

If f(x) = 3xsquared - x + 2 (Sorry I don't know how to make the squared number)
Then what is 2f(a) please show work

Answer 1

\[f(x) = 3x^2 -x +2\]

in order to find 2f(a)

the only thing you have to do is literally substitute x with a,
and then multiply 2 later

Answer 2

so

\[f(a) = 3a^2 -a +2\]

Answer 3

0.332

Answer 4

and

\[2f(a) = 2(3a^2-a+2)\]

so

\[2f(a) = 6a^2-2a+4\]

Answer 5

and if you want to indicate that a number is taken to the nth power

you put a^n

which is\[a^n\]

Answer 6

it's the same as a calculator :P

Answer 7

ok thanks much!