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x =root 2+1,find the value of (x-1/x)2

Posted by Juluru Krupavaram 5 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Neha Singh 5 years, 4 months ago

X=underrott 2 +1 When we will rationalise this no. Then x= 1/underrroot 2 - 1 So 1/x = underroot 2 - 1 hence x-1/x= underrott 2+1 +underrott 2-1=>2underroot 2 correct answer!

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CBSE > Class 09 > Mathematics