[ Quadratic equations. Formula for roots ]

Solve the equation: $x(x+1)=2014 \cdot 2015$.

#
The given equation is quadratic, so it has no more than two roots. One root ($x=2014$) is obvious. The second root can be found using Vieta's theorem or can also be "guessed".

## Answer

$x_{1}=2014, x_{2}=-2015$