2.If `A = [[2 ,2], [4,0]]` and `B= [[1 ,1] , [2 ,0]]` then a) `|A| =|B|` b) `|A| =2 |B|` c) `|A| =2^2 |B|` d) ` |A|= -|B|`

if A = [[3,9,0],[1,8,-2]] and B = [[4,0,2],[7,1,4]] find A+B and A-B?

If A= [[1,-1,0],[2,3,4],[0,1,2]] and B = [[2,2,-4],[-4,2,-4],[2,-1,5]] then, (A) A^(-1) =B (B) A^(-1) =6B (C) B^(-1) =B (D) B^(-1) = 1/6 A

If A= [[1,2],[3,4]] , adjA= [[4,a],[-3,b]] , then the values of a and b are: (a) a=-2, b=1 (b) a=2, b= 4 (c) a=2, b=-1 (d) a=1, b=-2

If A=[[1 ,2,-3],[ 5, 0, 2],[ 1,-1, 1]], B=[[3,-1, 2],[ 4, 2 ,5],[ 2, 0, 3]] and C=[[4, 1, 2],[ 0, 3, 2],[ 1,-2, 3]] , then compute (A+B) and (B - C) . Also, verify that A + (B - C) = (A + B) - C .

If A=[{:(,3,2),(,0,5):}] and B=[{:(,1,0),(,1,2):}] , find : (i) (A+B) (A-B) (ii) A^2-B^2 (iii) Is (A+B) (A-B) =A^2-B^2?

If A = [{:(0,4),(1,0):}], B = [{:( -2,0),(3,-2) :} ] and C = [ {:( -1,-2),(2,0) :}] show that : (B- C ) A = BA - CA

If A=[{:(0,1),(1,1):}] "and" B=[{:(0,-1),(1,0):}] , then show that (A+B)(A-B)neA^(2)-B^(2)

If a=2b ,\ then a : b= (a) 2:1 (b) 1:2 (c) 3:4 (d) 4:3

If a and b are roots of the equation x^2+a x+b=0 , then a+b= (a) 1 (b) 2 (c) -2 (d) -1