Question

How do i find the upper/lower limit for the zeros of an equation?
f(x)=x^3-2x^2-2x+4

Answer 1

Remember the rational root theorem and the descartes rule of signs?

Answer 2

No, not really.

Answer 3

Well, using the rational root theorem, you can find that the possible rational roots are ±1, ±4, ± 2. THerefore, take the lowest of these and the biggest of these and those are your limits.

Answer 4

Im lost