Question

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

Answer 1

Answer:

first take one zeroand do synthetic division using that zero then you get equation 2x^2-3x-2=0 then the zeros of this equation are 2 and -1/2 so now the third zero is -1/2