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Suppose det(A)=4 then how we could find the det(a^4) ?

A is a square matrix of order 4X4 .
in Linear Algebra
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determinant are distributive over multiplication i.e det(ABC)=detA*detB*detC.

det(A^4)=256..
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Could u help me to find the determinant of B

where, B= A ^4 -5A^2 + 5I

where det(A)=4 and I is Identity matrix .
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i dont think it is solvable without any other information...
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Why what info. do u required more ?
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