State with reason which of the following are Rational or Irrational Numbers.
(a) ( 3 - 5√2 )
²
(b) (5 + √5) (5 - √5)
(c) (2√7/7) ²
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Answer:
a. is irrational no. because it is non terminating and non repeating
b. (5+_|5)(5-_/5)
25-5_/5+5_/5-5
20
it is a rational no. because it terminating.
c.28/49
it is rational no. because it is non terminating but repeating
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