CUET and UG exam CUET UG 2025 Mock Test Series Mathematics Matrices Adjoint and Inverse of a Square Matrix
If a matrix A is such that 3A3 + 2A2 + 5A + I = O, then what is A-1 equal to?
1
-(3A2 + 2A + 5)
2
3A2 + 2A + 5I
3
3A2 - 2A - 5I
4
-(3A2 + 2A + 5I)