CBSE Class 1 Answered
how to prove root2 is irrational ?
Asked by kasagee1971 | 03 Apr, 2015, 02:07: PM
Expert Answer
Let us assume that 
is rational.
Hence a and b have at least 2 as a common factor, which means a and b are not co-prime.
This contradicts our assumption that is rational.
Hence, is irrational.
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