Question

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Answer 1

8). x^2 + 1/x^2 = 7

We have,

So, using

$【</p><p>(a + b) ^{2} = a ^{2} + b^{2} + 2ab$

$(x + 1/ x)^2 = x^2 + 1/x^2 + 2 \times x \times 1/x$

(x + 1/x)^2 = 7 + 2

(x + 1/x)^2 = 9

x + 1/x = √9

x + 1/x = 3

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Answer 2

Answer:

Your answer is on the above attachment

Hope this helps you.