Question

if -1 and 2 are two zeroes of the polynomial 2x3-x2-5x-2 find its third zero​

Answer 1

Answer:

alpha = -1

beta= 2

gamma= ?

2x^2 - x^2 -5x -2

a = 2

b = -1

c = -5

d = -2

we know that,

(alpha)*(beta)*(gamma) = -d/a

on substituting respective values , we get ,

(-1)*(2)*(gamma) = -(-2)/2

-2(gamma) = 2/2

gamma = (2/2)*-1/2

therefore gamma = 1 * -1/2

gamma = -1/2

that should help us

thank u !!!