If `((3,2), (7,5)) A ((-1,1), (-2,1)) = ((2,-1), (0,4))` then sum of the eigen values of `A`

if [{:(3,2),(7,5):}]A{:[(-1,1),(-2,1):}]={:[(2,-1),(0,4):}] then trace of A is equal to

if [{:(3,2),(7,5):}]A{:[(-1,1),(-2,1):}]={:[(2,-1),(0,4):}] then trace of A is equal to

If [(x-1,2,5-y),(0,z-1,7),(1,0,a-5)]=[(1,2,3),(0,4,7),(1,0,0)] then find the values of x,y,z and a.

If [{:(3,2),(7,x):}][{:(5,-2),(-7,y):}]=[{:(1,0),(0,1):}] then find the value of x and y .

Find the matrix X satisfying. [(3,2),(7,5)] X [(-1,1),(-2,1)] = [(2,-1),(0,4)]

If [(2,1),(7,4)]A[(-3,2),(5,-3)]=[(1,0),(0,1)] then matrix A equals

If A=[(2,2,1),(1,3,1),(1,2,2)] and the sum of eigen values of A is m anda product of eigen values of A is n, then m+n is equal to