Question

9√5 clasify the following number are irrational or rational
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Answer 1

Answer:

(i)2 - √5

Here 2 is a rational number and √5 is a irrational number

And difference of rational and irrational is always a irrational number

So that 2 - √5 is a irrational number

(ii) (3 +  √23) - √23

Solve the bracket we get

3 +  √23 - √23  = 3

and 3 is a rational number so that (3 +  √23) - √23 is a rational number

(iii)   and 2/7 can be written in form of p/q so it a rational number

(iv) 1/ √2  is an irrational number because 1 is rational and √2 is irrational and product or division of rational with irrational is always irrational

(v) 2pi   it is an irrational here 2 is rational and pi is a irrational number and product or division of rational with irrational is always irrational

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

9√5 is an Irrational number.

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