Question

If f(x)=5X2-2 and g(x)= x+1, find (f - g)(x).

Answer 1

5x² - x - 3

Explanation:

note that (f - g)(x) = f(x) - g(x)

f(x) - g(x)

= 5x² - 2 - (x + 1) ← distribute

= 5x² - 2 - x - 1 ← collect like terms

= 5x² - x - 3