If x=3+2√2, then find the value of √x-1/√x...|| Class 9 || rd Sharma question ||

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If x=3+2√2, then find the value of √x-1/√x...|| Class 9 || rd Sharma question ||
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I think the answer should be ±2
But great explanation

MohiniMahore
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Thanku so much sir I did this in 8th class

saisurya