Pls im very confused its unit rates

(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

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled