Question

The lower limit for the function f(x) = x5 - 3x3+ 24 is

Answer 1

choices:
-2
2
-3

I'm not sure why they use the word limit here, as a better term for this would be lower bound

anyway, set up synthetic division with -2 (dividing the polynomial by -2) and look for alternating + and - signs in your quotient. if you don't get that, move on to the next choice, until you get a quotient with alternating + and - signs.