Lindsay882 Lindsay882

03-04-2018
Mathematics

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Show all work. What are the zeros of the function?
f(x) = 2x^2 − 8x − 10

Respuesta :

03-04-2018

(2x² - 8x - 10) ÷ 2 = 0
x² - 4x - 5 = 0
x² + x - 5x - 5 = 0
x(x+1) - 5(x+1) = 0
(x+1)(x-5) = 0
x+1 = 0 or x-5 = 0
x = -1 or x= 5

S = {-1;5}

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