Question

The domain for f(x) and g(x) is the set of all real numbers.

Let f(x) = 3x + 5 and g(x) = x2.

Find g(x) − f(x).


x2 − 3x − 5


x3 − 5


3x2 − 5


3x3 − 5x2

Answer 1

g(x) − f(x) = x^2 - ( 3x + 5)
g(x) − f(x) = x^2 - 3x - 5

answer is A. first one
x^2 - 3x - 5

Answer 2

Hey there,

Your question states:

The domain for f(x) and g(x) is the set of all real numbers.

Let f(x) = 3x + 5 and g(x) = x2.

Find g(x) − f(x).

So, if
`\boxed{\boxed{f(x) = 3x + 5 \ and \ g(x) = x2.}}`, and what we are trying to figure out is
`g(x) - f(x)`, would would have ti find an expression that would by means fit with f(x) = 3x + 5 and g(x) = x2.

I would say that the answer would be x2 − 3x − 5.

By plugging in the f(x) = 3x + 5 and g(x) = x2, I believe that this would make more sense.

Hope this helps.
~Jurgen