Question

if x+1/x=3. find x^2+1/x^2​

Answer 1

Step-by-step explanation:

x+ 1/x=3 Squaring on both sides we get

${(x + \frac{1}{x})}^{2} = 9 = > {x}^2 + \frac{1}{ {x}^{2}} + 2.x. \frac{1}{x} =$

$9 = > {x}^{2} + \frac{1}{ {x}^{2} } + 2 = 9 = > {x}^{2} + \frac{1}{ {x}^{2}} =$

$7$

Hope it helps you.