Let A = bmatrix 1&2 -1&4 bmatrix . If A^ -1 = I+ A, , R, I is a 2 × 2 identity matrix, then 4( - ) is equal...

Question

Let A = bmatrix 1&2 -1&4 bmatrix . If A^ -1 = I+ A, , R, I is a 2 × 2 identity matrix, then 4( - ) is equal to :

Accepted Answer

(D)

JEE Main 2021 Mathematics question