Question

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Answer 1

Answer:

3+2×√5

3+2×23606798............

3+4.47213596...........

7.47213596...... is irrational number therefore 3+2√5 is irrational number

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Answer 2

Step-by-step explanation:

let

3 + 2√5 is a rational number

3 + 2√5=a/b

2√5=a/b-3

√5=a -6b/2b

therefor √5 is a rational number

but we know √5 is not a rational number

It is not correct

therefor 3+2√5 is an irrational number