Question

please give me the answers please ​

Answer 1

$\boxed{\bf{\red{\bigstar Answer: }}}$

• $(x + \frac{1}{x} ) ^{2} = {x}^{2} + \frac{1}{ {x}^{2} } + 1$
• $(x + \frac{1}{x} )^{2} = 63$
• $x + \frac{1}{x} = \sqrt{63} = \sqrt{7 \times 3 \times 3}$
• $= 3 \sqrt{7}$
• Hope it helps!