Question

*Fan & Medal*
Please explain how I can do this, I want to learn it.
Let f(x) = -2x + 4 and g(x) = -6x - 7. Find f(x) - g(x)

Answer 1

HI... I can help you

Answer 2

Okay... How do I solve this?

Answer 3

Hmm... you should find f(x)-g(x)=(-2x+4)-(-6x-7)=-2x+6x+4+7=4x-11

Answer 4

\[ax-bx=(a-b)x\]

Answer 5

Just using this formula we did the sum here

Answer 6

@leozap1 did you get it?

Answer 7

I'm trying just a sec

Answer 8

On this part "2x+6x+4+7" aren't we suppose to subtract? It says to find f(x) - g(x)

Answer 9

yeah correct

Answer 10

-(-6)=6

Answer 11

So it would be -2x-6x-4-7?

Answer 12

no

Answer 13

wait

Answer 14

Ohh so since they are already negative, it makes them positive?

Answer 15

the expression of f(x) will not be changed. but the expression of g(x) will be its negative..
g(x)=-6x-7 so -g(x)=-(-6x-7)=6x+7