Answer:
There is not enough information to find a solution. The work to find it if more variable are filled is below. You can also solve the problem by inputting these equations as solutions.
Explanation:
(x^(2)+a)(x^(2)-b)=0
You can find x by taking the square root of both sides
√(-a), -√(-a), √b, -√b
You can find a by -x^(2)
You can find b by x^(2)