Question

Find
$(i)a + \frac{1}{a}$
$(ii) {a}^{2} - \frac{1}{ {a}^{2} }$
​

Answer 1

$1) \: a + \frac{1}{a} = \frac{ {a}^{2} + 1 }{a} \\ 2) \: {a}^{2} + \frac{1}{ {a}^{2} } = \frac{ {a}^{4} + 1}{ {a}^{2} }$

Hope I help you...........

Answer 2

Answer:

2√17

16√17 is the answer to your question

Step-by-step explanation:

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