Simplify:
(i)
(ii) 
(i) 
At first, we find 
Therefore,
= 
=
= 7.7
And,
= 
=
= 2.3
Now,
= 0.54
(ii) 
At first, we find 
Therefore,
= 
=
= 0.44
And,
= 
=
= 0.42
Now,
= 15
16
Simplify:
(i)
(ii)
(i)
At first, we find
Therefore,
=
= = 7.7
And,
=
= = 2.3
Now,
= 0.54
(ii)
At first, we find
Therefore,
=
= = 0.44
And,
=
= = 0.42
Now,
= 15