Factor of n3+n+n2+1

I don't know sorry

note how the terms lend themselves to groupng:

n^3 + n + n^2 + 1 = n(n^2+1) + 1(n^2+1) = (n+1)(n^2+1)

To find the factors of the expression n^3 + n + n^2 + 1, we can try to factor it by grouping.

Step 1: Group the terms in pairs:
(n^3 + 1) + (n + n^2)

Step 2: Factor out the common factor from each group:
n(n^2 + 1) + 1(n^2 + 1)

Step 3: Notice that both terms have a common factor of (n^2 + 1), so we can factor it out:
(n^2 + 1)(n + 1)

Therefore, the factors of the expression n^3 + n + n^2 + 1 are (n^2 + 1) and (n + 1).