If A=`[[1,2],[-3,-4]]` and l is the identity matrix of order 2 then `A^(2)` equals "

If A=[(2,-1),(-1,2)] and l is the unit matrix of order 2, then A^(2) equals to

" Which one is the identity matrix of order "2" "

If A=[[2,-1-1,2]] and I is the identity matrix of order 2, then show that A^(2)=4a-3I Hence find A^(-1).

If A=[(2,-1),(-1,2)] and i is the unit matrix of order 2, then A^2 is equal to (A) 4A-3I (B) 3A-4I (C) A-I (D) A+I

If I_(3) is identity matrix of order 3, then I_(3)^(-1)=

If A=[(1,0),(-1,7)] and l is an identity matrix of order 2, then the value of k, if A^(2)=8A+kI , is :

If A is an invertible matrix of order 2, then det (A^(-1)) is equal to