Question

Verify that -2,-1/2,1/2are the zeroes of the cubic polynomial p(x) =4x^3+8x^2-x-2,and then verify the relationship between the zeroes and the coefficients​

Answer 1

Answer:

let x=-2

=4×-8+8×4+2-2

=0

let x=-1/2

=4×-1/8+8×1/4+1/2-2

=0

let x=1/2

=0

so -2 -1/2 1/2 are the zeroes of polynomials