Question

prove that 3+4√5 is an irrational number​

Answer 1

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Multiplication of rational and irrational number is irrational . So,4√5 is irrational. Now addition of rational and irrational number is irrational . So,3+4√5 is irrational number.

Answer 2

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Multiplication of rational and irrational number is irrational . So,4√5 is irrational. Now addition of rational and irrational number is irrational . So,3+4√5 is irrational number.