Question

For f(x)=2x+1 and g(x)=x^2-7, find (f-g)(X)
a:-x^2+2x-6
b:2x^2-15
c:x^2-2x-8
d:8+2x-x^2

Answer 1

subtract both functions

Answer 2

Can you set that up for me? I know you have to subtract them, although I have no idea how to set it up

Answer 3

f(x) - g(x)
= 2x+ 1 - (x^2 - 7)

Answer 4

take care when you distribute the - over the parentheses

Answer 5

what do you get?

Answer 6

i accidentally clicked the wrong answer

Answer 7

Think about it like this:

let a = 2x+1 , b = x\(^2\)-7 .

So you're essentially looking for a-b.

Answer 8

here's an example

- (x - 3) = -1*x -1*-3 = - x + 3

- just as if you were distributing -1