Question

Check whether
x² + 1/x^2=2 is the quadratic equation or not​

Answer 1

Step-by-step explanation:

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

$\frac{ {x}^{2} \times {x}^{2} + 1 }{ {x}^{2} } = 2$

${x}^{4} + 1 = 2 {x}^{2}$

${x}^{4} - 2 {x}^{2} + 1 = 0$

Here only one variable is use but the degree of the equation is not 2 hence it is not a quadratic equation