Find the integers that are the smallest upper bound and the largest lower bound on the real zeros of the polynomial function. f

Question

Find the integers that are the smallest upper bound and the largest lower bound on the real zeros of the polynomial function.

f left parenthesis x right parenthesis equals negative x Superscript 4 Baseline plus 5 x cubed minus 4 x squared minus 9 x plus 25

Answer 1

Answer 2

By Rational Root Theorem possible zeros are ±1 and ±5.

Use the Remainder theorem to locate zeros using synthetic substitution.

Answer 3

https://youtu.be/9NGe65zqI3c

See the videa.