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If x2 − 6x − 1 = 0, find x-1/x. - Mathematics

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Question

If x2 − 6x − 1 = 0, find `x-1/x`.

Sum
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Solution

x2 − 6x − 1 = 0

⇒ x2 − 1 = 6x

⇒ `(x^2−1)/x=6`

⇒ `x-1/x=6`

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Chapter 3: Expansions - EXERCISE B [Page 36]

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B Nirmala Shastry Mathematics [English] Class 9 ICSE
Chapter 3 Expansions
EXERCISE B | Q 7. (i) | Page 36
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