If `A=1/9[[-8,1,4],[4,4,7],[1,-8,4]],` show that `A^-1=A'.`

If A=(1)/(9)[{:(-8,1,4),(4,4,7),(1,-8,4):}] prove that A^(-1)=A^(T) .

If A= [[4,1,1],[1,4,1],[1,1,4]] , then show that |2A| = 8 |A| .

If A= (1)/(9) ((-8,1,4),(4,4,7),(1,-8,4)) , prove that, A^(-1)= A^(T) . Hence solve the following system of equations: -8x + y + 4z= 0, 4x + 4y + 7z= 18, x- 8y + 4z= 9

If A= (1)/(9)[{:(-8,1,4),(4,4,7),(1,-8,4):}],"prove that"" "A^(-1)=A^(T).

If A=1/9[-8 1 4 4 4 7 1-8 4] , prove that A^(-1)=A^T .

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

If A={1,2,3,4,5,6,7,8} and B={1,3,4,6,7,8,9} then

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