Question

the value -2 is a lower bound for the zeros of the function shown below f(x)=4x^3-12x^2-x+15
True or False?

Answer 1

im not really sure what it means by lower bound, but i think its true

Answer 2

have you tried finding the zeros of f?

Answer 3

if -2 less than or equal to the zeros of f then it is a lower bound.

Answer 4

there is actually a quicker way

Answer 5

use synthetic divsion