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Plzzzzzzzzzzzzzzzzz answer this my doubt (POLYNOMIALS CLASS 9 TH NCERT)

Plzzzzzzzzzzzzzzzzz answer this my doubt (POLYNOMIALS CLASS 9 TH NCERT)
 
 

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Grade:9

1 Answers

Rituraj Tiwari
askIITians Faculty 1792 Points
4 years ago
dear student,
as we know
(x-1/x)^2= x^2+1/x^2-1
=18-1
=17
thank you

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