Question

Consider the following functions.
f(x) = x2 + 6
g(x) = 2x2 - 5

Find the following:

(f - g)(x) =

Answer 1

f(x) - g(x)

Answer 2

\[(f-g)(x) = f(x)-g(x)=(x^{2}+6)-(2x^{2}-5) = -x^{2}+1\]

Answer 3

Thanks joe

Answer 4

I tried -x^2 + 1 on my hw & it said it was the wrong answer..

Answer 5

:)

Answer 6

becasue thats what i thought it was too

Answer 7

hmmm....maybe try typing it like this?:
\[-(x^{2})\]
Because there is a difference between:
\[-x^{2}\]
and this
\[(-x)^{2}\]
it might have thought you put in the latter.

Answer 8

no, i tried those too.. hmm..

Answer 9

The answer i gave is definitely correct, i wager my soul on it. Let me see if i can have someone verify.

Answer 10

haha ok, thank you.

Answer 11

Bleh, no one is coming, but thats the answer, im 100% sure of it.
For the x^2 term you do (1-2) = -1, for the constant you do OMG THERES MY MISTAKE.
its (6-(-5)) = 6+5 = 11
Doing math too fast is bad >.> im sry bout that (pls dont take my soul lol)

Answer 12

haha so it would be -x^2 + 11 ?

Answer 13

yes, thats right :)

Answer 14

yupp (: that worked! thank you! you can keep your soul lol

Answer 15

lol