If `A=[[6,9],[-4,-6]]`, then `A^2=?`

If A=[[0,23,-4]] and kA=[[0,3a2b,24]], then the values of k,a,b, are respectively (a)-6,-12,-18(b)-6,4,9(c)-6,-4,-9(d)-6,12,18

(2) Find the rank of the matrix A=[[1,2,3,-1],[3,6,9,-3],[2,4,6,-2]]

Find the rank of the matrix A=[[9,7,3,6],[5,-1,4,1],[6,8,2,4]]

If 2&6% 7=33,4 & 6% 8=54 , then what will be the value of 6% 8&9?

If A=[{:(2,3,10),(4,-6,5),(6,9,-20):}] , find A^(-1) . Using A^(-1) , solve the system of equations : {:((2)/(x)+(3)/(y)+(10)/(z)=2),((4)/(x)-(6)/(y)+(5)/(z)=5),((6)/(x)+(9)/(y)-(20)/(z)=-4):}

4,6, 9, 13(1)/(2) ?

6, 2, 9, 4, 12, ______

If f={(1,4),(2,5),(3,6)} and g={(4,8),(5,7),(6,9)} , then gof is