If `A=[3-5-4 2]` , find `A^2-5A-14 Idot`

If A=[(3,-5),(-4, 2)] , then find A^2-5A-14 I . .

If A=[{:(3,-5),(-4,2):}] then find A^(2)-5A- 14I . Hence, obtain A^(3) .

If A=|{:(3,5),(2,4):}| , find A^(-1) .

If A=[{:(3,-5),(-1,2):}] then find A^(2)-5A- 4I .

If A=[(2, 0, 1 ),(2, 1, 3),( 1,-1, 0)] , find A^2-5A+4I and hence find a matrix X such that A^2-5A+4I+X=O .

If A=[(3,-2),( 4,-2)] , find the value of lambda so that A^2=lambdaA-2Idot Hence, find A^(-1) .

If a :b =3:5 find 2a +3b: 4a+5b

If A=[[2,3,-4],[1,0,6],[-2,1,5]],B=[[5,1,2],[6,-1,4],[5,3,-4]] , find 2A-3B .

If A=[[1,4,-1],[2,6,5]] and B=[[3,-2,-6],[2,0,-7]] , find A+B and A-B

If A=[(2,3),(5,7)], B=[(0,4),(-1,7)]andC=[(1,0),(-1,4)] find AC+B^(2)-10C .