The degree of the differential equation $\left(1+\frac{dy}{dx}\right)^3 =\left(\frac{d^2y}{dx^2}\right)^2$ is :

1 2 3 4

2

The correct answer is Option (2) → 2 $\left(1+\frac{dy}{dx}\right)^3 =\left(\frac{d^2y}{dx^2}\right)^2$ degree of eq. = highest order of derivative = 2