Which of the following is an irrational number?
(1) 3+√2
(2) √4+2
(3) 3+√9
(4) 2√6 - √24
Answers
Answered by
0
Answer:
Only the square roots of the square numbers, i.e. the square roots of the perfect square is rational number.
(i) In 2−
5
, the number
5
is not a rational number, then 2−
5
is a irrational number.
(ii) In (3+
23
)−
23
=3+
23
−
23
=3 is a rational number.
(iii)
7
7
2
7
=
7
2
is a rational number.
(iv) In
2
1
, the number
2
is not a rational number, then
2
1
is irrational number.
(v) π is an irrational number, hence 2π is an irrational number.
Answered by
1
Answer:
1 and 4 is irrational number
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