Posted by tuhituhi on .
factorize
> 3a^2 +6a^2 x^2  3a^3 x ????

maths 
Steve,
Factor out 3a^2:
3a^2(1+2x^2ax)
That's about as far as we can go.
Now, if you had started out with
3a^4  6a^3x + 3a^2x^2,
you'd have 3a^2(xa)^2