Factor the polynomial completely:
9n^3-36n
Thought this one would be easy and it probably is but i cant figure it out. Help.?

Question

Factor the polynomial completely:
9n^3-36n
Thought this one would be easy and it probably is but i cant figure it out. Help.?

anonymous · Answer

There is a common factor in $$9n^3-36n$$The common factor is $$9n$$

anonymous · Answer

When you pull the common factor out you get
$$9n(n^2-4)$$ However, this is still factorable.

anonymous · Answer

$$(n^2-4)$$ is the same as $$(n-2)(n+2)$$ so the total factorization comes out to be $$9n(n-2)(n+2)$$ If you multiply everything out and distribute through to check your work, you'll end up with the original problem.

anonymous · Answer

Thank you. I see what i was doin wrong now. I appreciate the help.

anonymous · Answer

You're very welcome.