Math, asked by aanchalbang06, 10 months ago

show that 5-√3 is irrational

Answers

Answered by tshivom9
0

Answer:

let us assum that 5-√3 is rational number so we can find two integers a , b. Where a and b are two co - primes number. So it arise contradiction due to our wrong assumption that 5 - √3 is rational number. Hence, 5 -√3 is irrational number.

Answered by XxMissPaglixX
3

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let \: (5 -  \sqrt{3} ) \: be \: rational. \\ so \: 5 -   \sqrt{3} =  \frac{p}{q}    \\  \sqrt{3}  = 5 -  \frac{p}{q}  \\  \sqrt{3}  = \frac{5q - p}{q}  \\

Here,

 \sqrt{3}  \: is \: an \: irrational \: no. \: but \:  \frac{5q - p}{q}  \: is \: a \: rational \: no

So,

 \sqrt{3} \:  not \:  =  \frac{5q - p}{q}  \\ which \: contradicts \: our \: supposition \: that \\ (5 -  \sqrt{3} ) \: is \: rational

therefore \: (5 -  \sqrt{3} ) \: is \: irrational.

Hence Proved

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