prove that 3√2 is irrational
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Answer: 3+√2 = a/b ,where a and b are integers and b is not equal to zero .. therefore, √2 = (3b - a)/b is rational as a, b and 3 are integers.. ... So, it concludes that 3+√2 is irrational..
Answered by
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Answer:
Let us assume, to the contrary, that 3 √2
is rational. Then, there exist co-prime positive integers a and b such that
3 √2=a/b
√2=a/3b
√2is a rational ...[∵3,a and b are integers∴ a/3b is a rational number]
This contradicts the fact that √2 is irrational.
So, our assumption is not correct.
Hence, 3 √2 is an irrational number.
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