Respuesta :
Answer:
x = - 2
Step-by-step explanation:
note that (f + g)(x) = f(x) + g(x)
f(x) + g(x) = x² - 2x + 6x + 4 = x² + 4x + 4 = (x + 2)²
Equating to zero gives
(x + 2)² = 0, that is
x + 2 = 0 ⇒ x = - 2
Answer:
x = -2.
Step-by-step explanation:
(f + g)x = f(x) + g(x)
= x^2 - 2x + (6x + 4)
= x^2 + 4x + 4.
To find x when this = 0:
x^2 + 4x + 4 = 0
(x + 2)^2 = 0
x = -2.
