Numerical Analysis — error in forward Euler method

Forward Euler method is used to find numerical solution $y_1$ at $x = 0\cdot 2$ with $h = 0\cdot 2$ of the initial value problem $\frac{dy}{dx} = -2xy^2$, $y(0) = 1$. What is $|y(0\cdot 2) - y_1|$ approximately equal to?