vickyDhidachan vickyDhidachan

11-08-2016
Mathematics

contestada

let f(x) = x − 2 and g(x) = x2 − 7x − 9. find f(g(−1)). select one: a. −21 b. −3 c. 3 d. 21

Respuesta :

dalendrk dalendrk

20-08-2016

f(x) = x - 2
g(x) = x² - 7x - 9

g(-1) = (-1)² - 7(-1) - 9 = 1 + 7 - 9 = -1

f(g(-1)) = f(-1) = -1 - 2 = -3

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