micky67 micky67

04-10-2021
Mathematics

contestada

If f(x) = x2 – 2x and g(x) = 6x + 4, for which value of x does (f + g)(x) = 0?
d
a
-2
2
ОО
4

Respuesta :

jimrgrant1 jimrgrant1

04-10-2021

Answer:

x = - 2

Step-by-step explanation:

(f + g)(x)

= f(x) + g(x)

= x² - 2x + 6x + 4

= x² + 4x + 4

Equating to zero

x² + 4x + 4 = 0

(x + 2)² = 0

x + 2 = 0

x = - 2

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