bridebenson007 bridebenson007

26-02-2019
Mathematics

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PLEASE ANSWER MY QUESTION FAST WILL MARK BRAINLIEST

if -1 and 2 are two zeroes of the polynomial 2x^3 -x^2 - 5x -2, find its third zero.

Respuesta :

PeshwaBajirao42 PeshwaBajirao42

26-02-2019

let the third factor be a

(x+1)(x-2)(a)=2x^3-x^2-5x-2

(x^2-x-2)(a)=2x^3-x^2-5x-2

a=(2x^3-x^2-5x-2)/(x^2-x-2)

a=2x+1

third zero = -1/2

HOPE THIS WILL HELP U

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