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If f(x) = 3x - 1 and g(x) = x + 2, find (f- g)(x).
I can’t find it

1 Answer

13 votes

Answer:


(f-g)(x)=2x-3

Explanation:

We are given the two functions:


f(x)=3x-1\text{ and } g(x)=x+2

And we want to find:


(f-g)(x)

This is equivalent to:


=f(x)-g(x)

By substitution:


=(3x-1)-(x+2)

Simplify. Distribute:


=(3x-1)+(-x-2)

Rearrange:


=(3x-x)+(-1-2)

Therefore:


(f-g)(x)=2x-3

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