Question

Roots of a cubic
Show that the equation x^3-15x+1=0 has three solutions in the interval [-4,4].

Answer 1

okkayy

Answer 2

is it supposed to be 15x?

Answer 3

or x^2

Answer 4

or is it really x^3-14 ?

Answer 5

are you missing an x behind the 15, that is what is being asked

Answer 6

if you graph it, it should cross the x axis in 3 places
(if it has 3 solutions)