Question

prove that under root 5 is irrational number​

Answer 1

Answer:

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Answer 2

Answer:

$suppose \: \sqrt{5} \: is \: rtional \: no \: then \\ \: we \: can \: write \: i \: as \: \frac{a}{b} \: where \: b is not= 0 \\ and \: {({a \: b \:} )} \: = 1$

then after square of both side and solving it we will find that 5 is the another factor of (a,b) but we know already it has only one factor and that is 1

so this is wrong result because of our wrong prediction so we will say that

√5 is a irrational number ..

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