DestinyKiara99 DestinyKiara99

25-07-2016
Mathematics

contestada

Find a cubic function with the given zeros.
Square root of seven., -Square root of seven., -4

f(x) = x^3 + 4x^2+ 7x - 28
f(x) = x^3 + 4x^2 - 7x - 28
f(x) = x^3 - 4x^2 - 7x - 28
f(x) = x^3 + 4x^2 - 7x + 28

Respuesta :

apologiabiology apologiabiology

25-07-2016

an eqution with roots r1,r2,r3 is factored form as
(x-r1)(x-r2)(x-r3)

roots are √7, -√7, and -4

(x-√7)(x+√7)(x+4)
multiply
(x^2-7)(x+4)
x^3+4x^2-7x-28

2nd option si right naswer

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