Question

Check whether the following equation is quadratic or not
$x-\frac{3}{x}=x^2$

Answer 1

$x-\frac{3}{x}=x^2\frac{x^2-3}{x}=x^2{x}^2-3=x^3{x}^3-x^2+3=0$

It is not of the form ${ax}^2+bx+c=0$

Therefore,the given equation is not a quadratic equation.