aleiahmartin
26.08.2020 •
Mathematics
If f(x) = x^2 -2x and g(x) = 6x+4 for which value of x does (f+g)(x) =0
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Ответ:
(f+g)(x) = 0 if x = -2
Step-by-step explanation:
(f+g)(x) = f(x) + g(x) = x² - 2x + 6x + 4
(f+g)(x) = x² + 4x + 4
x² + 4x + 4 = 0
(x + 2)² = 0
So, x = -2.
Ответ: