Question

prove that √5 irrational​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

let a and b be coprime no.

a/ b = √5

squaring both side

a^2/b^2 = 5

5/ b^2= a^2

if b^ 2 divides by 5 then b can also divide similarly a can also divide. hence this is a contradiction.