Question

prove that 3 + 2 √5 is irrational number​

Answer 1

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Step-by-step explanation:

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3 + 2√5 = a/ b

2√5 =a/b -3

√5 =a-3b/2b

√5 is rational.

This contradicta the fact that √5 is irrational.

So our supposition is incorrect.

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Answer 2

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