3.If `A=[[1,0,0],[2,3,4],[5,-6,x]]` and det `A=45` then find `x`

If A=[(1,-2,3),(4,5,-1),(5,0,2)] find 3A

If |[x,-6,1],[2x,-3,3],[0,1,2]| =0 find the value of x

If A=[[2,3,4],[-3,0,2]], B=[[3,-4,-5],[1,2,1]] and C=[[5,-1,2],[7,0,3]] , find the matrix X such that 2A+3B=X+C

If [(2x+y,3y),(0, 4)]=[(6, 0),( 6, 4)] , then find x .

If |[1, x, x^2], [x, x^2, 1], [x^2, 1, x]|=3, then find the value of |[x^3-1, 0, x-x^4], [0, x-x^4, x^3-1], [x-x^4, x^3-1, 0]|

If A=[8 0 4-2 3 6] and B=[2-2 4 2-5 1] , then find the matrix X of order 3xx2 such that 2A+3X=5B .

If A=[(-1,0,2),(3,1,4)], B=[(0,-2,5),(1,-3,1)] and C=[(1,-5,2),(6,0,-4)], then find (2A-3B+4C).

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 x in{-2,-1,0,1,2,3,4,5} , find the solution set of each of the following inequations : (2)/(3)+xlt-(1)/(6)

If 2((1,3),(0,x))+((y,0),(1,2))=((5,6),(1,8)) , then find the value of x+y.