Question

please sovle this question​

Answer 1

$ii) \\ = > x + \frac{1}{x} = \sqrt{5} \\ \\ = > {( x + \frac{1}{x})}^{2} = { (\sqrt{5} )}^{2} \\ \\ = > {x}^{2} + \frac{1}{ {x}^{2} } + 2 = 5 \\ \\ = > {x}^{2} + \frac{1}{ {x}^{2} } = 3$

Answer 2

Answer:

Step-by-step explanation:

(ii) sqaureing on b/s

= $x^{2} +2 +1/x^{2}$ = $\sqrt{5}$

=$x^{2} +1/x^{2}$  =5-2

=  therefore $x^{2} +1/x^{2} = 3$

(i) x - 1/x

we need to subract - 4 on b/s because we need the answer in minus

= $x^{2} +1/x^{2} + 2 -4 = 5-4$

(x - 1/x)^2 = 1

if we send root that side $\sqrt[2]{1}$

= 1

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