Question

Factories xcube-3xsquare-9x-5

Answer 1

x^3-3x^2-9x-5
=x^2(x-3)-9x-5
may be something is missing check it out in que

Answer 2

put x=-1
p(-1)=(-1)^3-3*(-1)^2-9*-1-5
       =-1-3+9-5
       =-4+4
       =0
x+1 is a factor.
divide the polynomial with x+1.
then you get,
q(x)=x^2-4x-5
then factorize it by splitting the middle term method 
you get x=-1 and x=5
i.e -1,-1 and 5 are the factors
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