If the m-th power of polynomial X and the 2-th power + (M + n) x + 1 of polynomial X are cubic quaternions and the coefficient of the first term is - 1, then M =?, n =?

If the m-th power of polynomial X and the 2-th power + (M + n) x + 1 of polynomial X are cubic quaternions and the coefficient of the first term is - 1, then M =?, n =?

3,-4