Question

if x-1/x=4,find the values of the following.
i)x^2+1/x^2
ii)x^4+1/x^4​

Answer 1

Answer:

your answer attached in the photo

Answer 2

Solution →

${x}^{2} + \frac{1}{ {x}^{2} } = 18$

${x}^{4} + \frac{1}{ {x}^{4} } = 322$

Calculation is in the attachment.

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