Let f(x) = -2x+4 and g(x) = -6x-7. Find f(x) - g(x).

This is what I have so far...

(f - g)(x) = f(x) - g(x) = (-2x+4) - (-6x-7) = 4x -

(Stuck from there :/ )

Question

Let f(x) = -2x+4 and g(x) = -6x-7. Find f(x) - g(x).

This is what I have so far...

(f - g)(x) = f(x) - g(x) = (-2x+4) - (-6x-7) = 4x -

(Stuck from there :/ )

jim_thompson5910 · Answer

distribute the negative through to get...

(-2x+4) - (-6x-7)

-2x+4 - (-6x) - (-7)

-2x+4 + 6x + 7

I'll let you finish

jim_thompson5910 · Answer

notice how the signs of everything in (-6x-7) changed

-6x turned into +6x

-7 turned into +7

all because of the negative out front

anonymous · Answer

4x + 11... So all I do is distribute the negative? Then add like terms?

jim_thompson5910 · Answer

correct

jim_thompson5910 · Answer

you can think of (-2x+4) - (-6x-7) as really (-2x+4) - 1(-6x-7)

the negative out front is really -1 out front. And you distribute like normal

anonymous · Answer

Thank you so much!!! :)

jim_thompson5910 · Answer

you're welcome