What is the waiting-to-be-factored form of 4n^2+30n+30?

2(2n^2 + 15n + 15)

4n^2 + 30n + 30
= 2(2n^2 + 15n + 15n)

4(n+1.188262309)(n+6.311737692)=
=(4n+7.5)(n+6.311737692)

4n^2+30n+30
= 2 (2n^2 + 15n + 15)
= 4 [n+ ((15-√105)/4)][n + ((15 +√105)/4 ]
where (- 15 ± √105)/4 are roots of the equation 2n^2 + 15n + 15 = 0

4n^2+30n+30

first factor out a 2

2 (2n^2 + 15n + 15)

That's as far as you can take it, the Trinomial part cannot be factored so you need to use the quadratic formula to find the factors