`I^(2)` is equal to, where I is identitity matrix.

For a matrix A, if A^(2)=A and B=I-A then AB+BA +I-(I-A)^(2) is equal to (where, I is the identity matrix of the same order of matrix A)

If A=[(2, 2),(9,4)] and A^(2)+aA+bI=O . Then a+2b is equal to (where, I is an identity matrix and O is a null matrix of order 2 respectively)

If A and B are square matrices of same order such as AB=A,BA=B then (A+I)^(5) is equal to (where I is the unit matrix):-

Let A and B are two non - singular matrices of order 3 such that A+B=2I and A^(-1)+B^(-1)=3I , then AB is equal to (where, I is the identity matrix of order 3)

If A is a square matrix and |A|!=0 and A^(2)-7A+I=0 ,then A^(-1) is equal to (I is identity matrix)

[" If "A" is a square matrix and " |A|!=0 " and " A^(2)-7A+I=0" ,"],[" then "A^(-1) " is equal to ( "" ( is identity matrix) "]

Suppose A and B be two ono-singular matrices such that AB= BA^(m), B^(n) = I and A^(p) = I , where I is an identity matrix. If m = 2 and n = 5 then p equals to

" If "A" is a square matrix and " |A|!=0" and "A^(2)-7A+I=0 " ,then "A^(-1)" Ais equal to (/ is identity matrix) "

If A is a skew symmetric matrix, then B=(I-A)(I+A)^(-1) is (where I is an identity matrix of same order as of A )