Why is pompeii considered a "lost city"? what are the current issues facing the area and what is being done to solve these issues?

The "lost city" of Pompeii was an amazing disclosure in 1738. From that point forward, a huge number of visitors have set out to Italy to see this mind blowing disclosure of a city finished covered in fiery debris very nearly 2000 years back. The essential concern confronting students of history and archeologists today is saving this site and protec±ng it from visitors and the components.

2. x2 + 8x + 12 = 0 to prove: x = -6 or x = -2