Question

If f(x)=5x³-2 and g(x)=x+1, find (f - g)(x).

Answer 1

f(x) = 5x³ - 2

g(x) = x + 1

Therefore, (f - g)(x) = (5x³ - 2) - (x + 1) = 5x³ - x - 3

So, (f - g)(x) = 5x³ - x - 3.

Answer 2

5x³ - x - 3

Explanation:

(f - g)(x) =

f(x) - g(x) =

5x³-2 - (x+1) = ==> plug in known values

5x³-2 - x - 1 = ==> simplify

5x³ - x - 2 - 1 = 5x³ - x - 3