Find x, if 
Multiplying matrices on the left hand side
L.H.S = 
= 
= 
= 
= 
=
=
R.H.S = O
=
∴ L.H.S = R.H.S we get,
x2 – 48 =0
x2 = 48
Hence the required value of 
9
Find x, if
Multiplying matrices on the left hand side
L.H.S =
=
=
=
=
=
=
R.H.S = O
=
∴ L.H.S = R.H.S we get,
x2 – 48 =0
x2 = 48
Hence the required value of