Verified answer

Combine like terms:

-t²-1

That doesn't factor in real numbers, but if you really need to you can use the quadratic formula and the factor theorem to find the factors:

- (t + i) (t - i) where i² = -1

This is a peculiar-looking problem. It would have made more sense if it had been:

2t³-t²+2t-1

In which case, group it:

(2t³ - t²) + (2t - 1)

Factor out the common factor:

t² (2t - 1) + (2t - 1)

Use the distributive property:

(2t - 1) (t² + 1)

But this looks like me making up my own problem.