Help Please

x^3 + 14x^2  +  13x    take out the GCF    =  x

x ( x^2  + 14x + 13)            note ..in the parentheses  the last term  = 13  = 13 * 1       and  the middle term  = 13 + 1  = 14

So....this gives us the clue that  the correct factorization is

x ( x + 13)  ( x + 1)