Question

Asq. +1/asq.=23, find (a+1/a)

Answer 1

Answer:

${a}^{2} + \frac{1}{ {a}^{2} } = 23 = > {a}^{2} + \frac{1}{ {a}^{2} } + 2.a. \frac{1}{a} =$

$23 + 2 = 25 = > {(a + \frac{1}{a}) }^{2} = 25 = >$

$(a + \frac{1}{a}) = {25}^{0.5} = ( {5}^{2} )^{ 0.5} = 5 = >$

$(a + \frac{1}{a}) = 5$

Hope it helps you.