A polynomial problem

[jackyliang89]

Two zeros of the polynomial
P(x)=x^4-4X^3-24^2+20x+7
are and . The other two zeros are real, but irrational.
The smaller is , and the larger is .
Hint: Divide P by two linear factors or by one quadratic factor.
:roll:

 

[BlBl]

There seems to be some missing information in this question. Could you review it and write it again?