Question

1. Prove that the given numbers are irrational

$3 \sqrt{5 }$

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Answer 1

Answer:

Because they cant be simplyfy......

Answer 2

3√5=a/b

√5=a/3b{since a and b r integers

√5=a/3b is rational}

therefore√5 is rational

but we have proved above that √5 is irrational

so,our assumption is wrong

3√5is irrational

Hence, Proved.