Q83 of 131 Page 1

Express with a rational denominator the following surds:
         (i)       (ii)      (iii)    (iv)     (v) (vi) 

(i)
The simplest Rational factor of isitself.
... x 
(ii)
The simplest R.F of  is itself.
...x =
(iii)
=
  The simplest R.F of  is itself.
...  =
(iv)
  The simplest R.F of  is  itself.
... x
(v) The simplest R.F of is  itself.
  
(vi) The simplest R.F of is itself as 
... = x=

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All 131 →
81 Simplify and express the result in its simplest form: 
         (1) ÷ x
         (2) x x 82 Write the simplest rationalising factor of   
         (i)          (ii)       (iii)         (iv)        (v) 84 (a) Which is greater or   ? 
(b) Arrange in ascending order of magnitude  , , . 85 Find the value to three places of decimals, of each of the following. It is given  that= 1.414,  = 1.732,   = 3.162 and = 2.236 (approx.)   (i) (ii)   (iii)   (iv)   (v)    (vi)