Question

Please help me ??!?!?

Answer 1

2x-6-(3x+9)

2x-6-3x-9

-x-15 = (f-g)(x)

Answer 2

For this case we have given two functions, f (x) and g (x).

So:

`(f-g) (x) = f (x) -g (x)`

We have:

`f (x) = 2x-6\\g (x) = 3x + 9`

So:

`(f-g) (x) = 2x-6- (3x + 9)`

Taking into account that
`- * + = -`

`(f-g) (x) = 2x-6-3x-9`

Different signs are subtracted and the sign of the major is placed.

`(f-g) (x) = - x-15`

Answer:

`(f-g) (x) = - x-15`

Option D