I need the answer plz​

I can't solve and show it but only tell a method to do it!

So find the zero of the given factor:

i.e.

Now put its value (-1) in the polynomial

Now if the answer comes zero it is a factor.

You'll get your answer!

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3