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Q16 of 114 Page 4

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

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Evaluate and hence find the value of

18

Find the value of and hence find the value of

(i)

(ii)