Question 19
Evaluate the following expression.
$$\frac{2019^2-\left(2017^2-\left(2015^2-\left(2013^2-\left(\ldots-\left(3^2-1^2\right)\right)\right)\right)\right)}{1010}$$
$$\frac{2019^2-\left(2017^2-\left(2015^2-\left(2013^2-\left(\ldots-\left(3^2-1^2\right)\right)\right)\right)\right)}{1010}$$