Use the cut point method to find the solution set of the inequality x^3+3x^2-4x-120.
One cut point is ?
a. -1
b. 6
c. 2
d. -12

Question

Use the cut point method to find the solution set of the inequality x^3+3x^2-4x-12>0. 
One cut point is ?
a. -1
b. 6
c. 2
d. -12

anonymous · Answer

anonymous · Answer

K thanks. Would you be ale to explain to me what exactly a cut point is?

accessdenied · Answer

What level of math is this?  I tried searching for "cut points" and its way beyond me...

anonymous · Answer

PreCalculus. Yea, it's difficult. I think I figure it out though, thanks!

accessdenied · Answer

Hmm.. can you explain?  I'm honestly curious about this.  The explanations I'm seeing are Topology-level stuff.  :P

anonymous · Answer

First find the factors of the polynomial x^3+3x^2-4x-12

anonymous · Answer

anonymous · Answer

@shivam_bhalla is the answer 2? That's what I got

accessdenied · Answer

Ohhh, yes.  That would make sense then.  "Cut-point" is a new term for it to me.

anonymous · Answer

A cubic polynomial always has 3 roots.  Use synthetic division to find them

anonymous · Answer

K. Thanks guys

anonymous · Answer

Looks like you got it :D