" Whe the "A=[[-8,5],[2,4]]" ,then prove that "A^(2)+4A-42I=0" also find "A^(-1)" ."

If A=[[4,8],[-2,-4]] ,prove that A^(2)=0

If A=[[4,8],[-2,-4]] prove that A^2=0

Show that A=[[-8,5],[2,4]] satifies the equation A^2 +4A-42=0

For the matrix,A=[[1,-12,3]] show that A^(2)-4A+5I=0 and also find A^(-1)

If A =[[1,2,2],[2,1,2],[2,2,1]] then prove that A^2-4A-5I=0 .

A = [[3,-5],[-4,2]] , verify that A^2 -5A-14I=0, hence find A^(-1)

If A=[[1,-1,2],[3,0,-2],[1,0,3]] then prove that A*(adjA)=|A|I Also,find A^(-1)

Show that A=[[-8,5],[2,4]] satifies the equation x^2 +4x-42=0

If A = [[3,-5],[-4,2]] ,show that A^2 -5A-14I =0.

Find the inverse of each of the matrices given below : Show that the matrix A=[(-8,5),(2,4)] satisfies the equation A^(2)+4A-42I=0 and hence find A^(-1) .