Question

X ²+1/x²=5 then x-1/x​

Answer 1

Answer:

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