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

If A=((2,-1),(-1,2)) and I is the unit matrix of order 2, then A^(2) is equal to -

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 A= [[2,-1],[-1,2]] and I is the unit matrix of order 2 , then A^2 is equal to

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

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

If A=[(1, 0,0),(0,1,0),(a,b,-1)] and I is the unit matrix of order 3, then A^(2)+2A^(4)+4A^(6) is equal to