polynomials..

[lovely_nancy]

the questions asks me to solve x³ - 24x + 32 = 0 and find the possible values of x
but Im not sure which method to use :S
please help me with where you can
Thanks Nancy

 

[Deleted member 4993]

the questions asks me to solve x³ - 24x + 32 = 0 and find the possible values of x
but Im not sure which method to use :S
please help me with where you can
Thanks Nancy

What methods have you been taught to solve such problem?

Have you been taught "rational root" theorem?

Hint:

Try all the factors (positive and negative) of 32 as a solution.

Please show your work, indicating exactly where you are stuck - so that we may know where to begin to help you.

 

[BigGlenntheHeavy]

\(\displaystyle f(x) \ = \ x^3-24x+32\)

\(\displaystyle Hint: \ f(4) \ = \ 0.\)