SOLUTION: how do i factor n^3+5n^2-4n-20 as a polynomial

Question 266087: how do i factor n^3+5n^2-4n-20 as a polynomial
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given expression

Group like terms

Factor out the GCF out of the first group. Factor out the GCF out of the second group

Since we have the common term , we can combine like terms

Now factor to get (use the difference of squares formula).

So factors to

In other words,
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