Question

Which of the following is an upper bound for the zeros of f(x)=2x^3-4x^2-x-2



-1

1

2

3

I don't think it's any of these.

Answer 1

The Upper and Lower Bounds of Real Roots and how to find them are attached.

Answer 2

For your problem, y =2x^3-4x^2-x-2,
prepare the coefficients for synthetic division.

Test the last option 3.