Thank you for reporting, we will resolve it shortly
Q.
Number of real roots of equation $x^4+x^2-12=0$ is
Complex Numbers and Quadratic Equations
Solution:
$x^4+x^2-12=0$
$\left(x^2+4\right)\left(x^2-3\right)=0 $
$\Rightarrow x^2=-4 \text { or } x^2=3$
$x=\pm 2 i x=\pm \sqrt{3}$
so number of real roots is 2