Answer:
±1,±5,±1/2,±5/2,±1/4,±5/4
Explanation:
Given polynomial
4x^3+8x^2-x+5
as a(n)= 4
divisors of 4 = ±1,±2,±4
as a(0)= 5
divisors of 5= ±1,±5
finding possible roots
Factors of constant term(1,5)/Factors of leading coefficient(1,2,4)
±1,±5
±1/2,±5/2
±1/4,±5/4 !