Question

If f(x) = 3x2 - 4 and g(x) = x+2, find (f - g)(x).

Answer 1

Answer:

$(f-g) (x) = 3x ^ 2- x - 6$

Step-by-step explanation:

We have the following functions

$f (x) = 3x ^ 2-4$

$g (x) = x + 2$

To find $(f-g) (x)$ we must subtract the function f(x) with the function g (x)

Then we perform the following operation

$(f-g) (x) = 3x ^ 2-4- (x + 2)$

$(f-g) (x) = 3x ^ 2-4- x - 2$

$(f-g) (x) = 3x ^ 2- x - 2-4$

Finally we have that:

$(f-g) (x) = 3x ^ 2- x - 6$

Answer 2

Answer:

3x^2-x-6

Step-by-step explanation:

f-g means you are going to do (3x^2-4)-(x+2)

3x^2-4-x-2

Combine like terms

3x^2-x-6