Question

Lf f(x) = -4x^2- 6x-1 and g(x) = -x^2 - 5x + 3, find (f- g)(x).

Answer 1

(f - g)(x) = 5x² - x - 4

Explanation:

(f - g)(x)

= f(x) - g(x)

= 4x² - 6x - 1 - (- x² - 5x + 3) ← distribute parenthesis by - 1

= 4x² - 6x - 1 + x² + 5x - 3 ← collect like terms

= 5x² - x - 4