Prove that root 2 is a irrational number

1.	Prove that root 2 is a irrational number
Answer» Assume Let root 2 be a rational no.Means root 2 = a/bRoot2b=aSquaring both the sides we get2b square =a squareLet a=2c2b squre = 4c squareB sq.= 2 c sqB has two fqctirs

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