1showthat 22 is a rationalnumber

1.	1showthat 22 is a rationalnumber
Answer» this cannot pe proved let 2root 2 is a rational no. therefore 2root 2 is a rational no. and 1/2 is a rational no. so (2root 2×1/2) is also a rational no. because product of two rationals is rationalit shows that root2 is rationalso our assumption is wrong Hence,2 root2 is an irrational no.

Answer»

this cannot pe proved

let 2root 2 is a rational no. therefore 2root 2 is a rational no. and 1/2 is a rational no. so (2root 2×1/2) is also a rational no. because product of two rationals is rationalit shows that root2 is rationalso our assumption is wrong Hence,2 root2 is an irrational no.

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1showthat 22 is a rationalnumber

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