factor completely

Question

32 - 2t^4

is this correct?

2(t^2-4) (t^2 + 4)

Answer 1

Yes, except for a sign error and the fact that it can be factored one more time, into

32 - 2t^4 = -2(t^4 -1)
= -2(t+2)(t-2)(t^2 +4)