pls answer

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pls answer

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The Brainliest Answer!

let a , b be integer with common factor 1

root2 =a/b

a= b*root2

by squaring on both sides

2b square =a square

=>b square =a (1)

since 2 divides a square

2 divides a

we can write a =2c ,c is some integer (2)

there fore we can write

2 b square = 4 c square

2 divides b square

therefore , 2divides b

ie a and b have 2 as common factor

therefore our assumption is wrong

hence root 2 is irrational