Question 579392
3n^4-33n^2+30 
----
3n^4-30n^2-3n^2+30
-----
Factor:
3n^2(n^2-10)-3(n^2-10)
-----
Factor:
(n^2-10)(3n^2-3)
----
= (n-sqrt(10))(n+sqrt(10))(3(n^2-1))
-----
= (n-sqrt(10))(n+sqrt(10))(3(n^2-1))
----
= (n-sqrt(10))(n+sqrt(10))(3(n-1)(n+1)
----
Rearrange any way you wish.
Cheers,
Stan H.
=================